81388020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:123

約数の個数: 288

約数和(自身を含む): 294174720

約数和(自身を除く): 212786700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 31, 35, 38, 42, 47, 49, 57, 60, 62, 70, 76, 84, 93, 94, 95, 98, 105, 114, 124, 133, 140, 141, 147, 155, 186, 188, 190, 196, 210, 217, 228, 235, 245, 266, 282, 285, 294, 310, 329, 372, 380, 399, 420, 434, 465, 470, 490, 532, 564, 570, 588, 589, 620, 651, 658, 665, 705, 735, 798, 868, 893, 930, 931, 940, 980, 987, 1085, 1140, 1178, 1302, 1316, 1330, 1410, 1457, 1470, 1519, 1596, 1645, 1767, 1786, 1860, 1862, 1974, 1995, 2170, 2303, 2356, 2604, 2660, 2679, 2793, 2820, 2914, 2940, 2945, 3038, 3255, 3290, 3534, 3572, 3724, 3948, 3990, 4123, 4340, 4371, 4465, 4557, 4606, 4655, 4935, 5358, 5586, 5828, 5890, 6076, 6251, 6510, 6580, 6909, 7068, 7285, 7595, 7980, 8246, 8742, 8835, 8930, 9114, 9212, 9310, 9870, 10199, 10716, 11172, 11515, 11780, 12369, 12502, 13020, 13395, 13818, 13965, 14570, 15190, 16492, 17484, 17670, 17860, 18228, 18620, 18753, 19740, 20398, 20615, 21855, 22785, 23030, 24738, 25004, 26790, 27636, 27683, 27930, 28861, 29140, 30380, 30597, 31255, 34545, 35340, 37506, 40796, 41230, 43710, 43757, 45570, 46060, 49476, 50995, 53580, 55366, 55860, 57722, 61194, 61845, 62510, 69090, 71393, 75012, 82460, 83049, 86583, 87420, 87514, 91140, 93765, 101990, 110732, 115444, 122388, 123690, 125020, 131271, 138180, 138415, 142786, 144305, 152985, 166098, 173166, 175028, 187530, 193781, 203980, 214179, 218785, 247380, 262542, 276830, 285572, 288610, 305970, 332196, 346332, 356965, 375060, 387562, 415245, 428358, 432915, 437570, 525084, 553660, 577220, 581343, 611940, 656355, 713930, 775124, 830490, 856716, 865830, 875140, 968905, 1070895, 1162686, 1312710, 1356467, 1427860, 1660980, 1731660, 1937810, 2141790, 2325372, 2625420, 2712934, 2906715, 3875620, 4069401, 4283580, 5425868, 5813430, 6782335, 8138802, 11626860, 13564670, 16277604, 20347005, 27129340, 40694010, 81388020]

約数ペア:

[(1, 81388020), (2, 40694010), (3, 27129340), (4, 20347005), (5, 16277604), (6, 13564670), (7, 11626860), (10, 8138802), (12, 6782335), (14, 5813430), (15, 5425868), (19, 4283580), (20, 4069401), (21, 3875620), (28, 2906715), (30, 2712934), (31, 2625420), (35, 2325372), (38, 2141790), (42, 1937810), (47, 1731660), (49, 1660980), (57, 1427860), (60, 1356467), (62, 1312710), (70, 1162686), (76, 1070895), (84, 968905), (93, 875140), (94, 865830), (95, 856716), (98, 830490), (105, 775124), (114, 713930), (124, 656355), (133, 611940), (140, 581343), (141, 577220), (147, 553660), (155, 525084), (186, 437570), (188, 432915), (190, 428358), (196, 415245), (210, 387562), (217, 375060), (228, 356965), (235, 346332), (245, 332196), (266, 305970), (282, 288610), (285, 285572), (294, 276830), (310, 262542), (329, 247380), (372, 218785), (380, 214179), (399, 203980), (420, 193781), (434, 187530), (465, 175028), (470, 173166), (490, 166098), (532, 152985), (564, 144305), (570, 142786), (588, 138415), (589, 138180), (620, 131271), (651, 125020), (658, 123690), (665, 122388), (705, 115444), (735, 110732), (798, 101990), (868, 93765), (893, 91140), (930, 87514), (931, 87420), (940, 86583), (980, 83049), (987, 82460), (1085, 75012), (1140, 71393), (1178, 69090), (1302, 62510), (1316, 61845), (1330, 61194), (1410, 57722), (1457, 55860), (1470, 55366), (1519, 53580), (1596, 50995), (1645, 49476), (1767, 46060), (1786, 45570), (1860, 43757), (1862, 43710), (1974, 41230), (1995, 40796), (2170, 37506), (2303, 35340), (2356, 34545), (2604, 31255), (2660, 30597), (2679, 30380), (2793, 29140), (2820, 28861), (2914, 27930), (2940, 27683), (2945, 27636), (3038, 26790), (3255, 25004), (3290, 24738), (3534, 23030), (3572, 22785), (3724, 21855), (3948, 20615), (3990, 20398), (4123, 19740), (4340, 18753), (4371, 18620), (4465, 18228), (4557, 17860), (4606, 17670), (4655, 17484), (4935, 16492), (5358, 15190), (5586, 14570), (5828, 13965), (5890, 13818), (6076, 13395), (6251, 13020), (6510, 12502), (6580, 12369), (6909, 11780), (7068, 11515), (7285, 11172), (7595, 10716), (7980, 10199), (8246, 9870), (8742, 9310), (8835, 9212), (8930, 9114)]