209895420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^4\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:118

約数の個数: 240

約数和(自身を含む): 722792448

約数和(自身を除く): 512897028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 47, 49, 60, 62, 70, 84, 93, 94, 98, 105, 124, 140, 141, 147, 155, 186, 188, 196, 210, 217, 235, 245, 282, 294, 310, 329, 343, 372, 420, 434, 465, 470, 490, 564, 588, 620, 651, 658, 686, 705, 735, 868, 930, 940, 980, 987, 1029, 1085, 1302, 1316, 1372, 1410, 1457, 1470, 1519, 1645, 1715, 1860, 1974, 2058, 2170, 2303, 2401, 2604, 2820, 2914, 2940, 3038, 3255, 3290, 3430, 3948, 4116, 4340, 4371, 4557, 4606, 4802, 4935, 5145, 5828, 6076, 6510, 6580, 6860, 6909, 7203, 7285, 7595, 8742, 9114, 9212, 9604, 9870, 10199, 10290, 10633, 11515, 12005, 13020, 13818, 14406, 14570, 15190, 16121, 17484, 18228, 19740, 20398, 20580, 21266, 21855, 22785, 23030, 24010, 27636, 28812, 29140, 30380, 30597, 31899, 32242, 34545, 36015, 40796, 42532, 43710, 45570, 46060, 48020, 48363, 50995, 53165, 61194, 63798, 64484, 69090, 71393, 72030, 74431, 80605, 87420, 91140, 96726, 101990, 106330, 112847, 122388, 127596, 138180, 142786, 144060, 148862, 152985, 159495, 161210, 193452, 203980, 212660, 214179, 223293, 225694, 241815, 285572, 297724, 305970, 318990, 322420, 338541, 356965, 372155, 428358, 446586, 451388, 483630, 499751, 564235, 611940, 637980, 677082, 713930, 744310, 856716, 893172, 967260, 999502, 1070895, 1116465, 1128470, 1354164, 1427860, 1488620, 1499253, 1692705, 1999004, 2141790, 2232930, 2256940, 2498755, 2998506, 3385410, 3498257, 4283580, 4465860, 4997510, 5997012, 6770820, 6996514, 7496265, 9995020, 10494771, 13993028, 14992530, 17491285, 20989542, 29985060, 34982570, 41979084, 52473855, 69965140, 104947710, 209895420]

約数ペア:

[(1, 209895420), (2, 104947710), (3, 69965140), (4, 52473855), (5, 41979084), (6, 34982570), (7, 29985060), (10, 20989542), (12, 17491285), (14, 14992530), (15, 13993028), (20, 10494771), (21, 9995020), (28, 7496265), (30, 6996514), (31, 6770820), (35, 5997012), (42, 4997510), (47, 4465860), (49, 4283580), (60, 3498257), (62, 3385410), (70, 2998506), (84, 2498755), (93, 2256940), (94, 2232930), (98, 2141790), (105, 1999004), (124, 1692705), (140, 1499253), (141, 1488620), (147, 1427860), (155, 1354164), (186, 1128470), (188, 1116465), (196, 1070895), (210, 999502), (217, 967260), (235, 893172), (245, 856716), (282, 744310), (294, 713930), (310, 677082), (329, 637980), (343, 611940), (372, 564235), (420, 499751), (434, 483630), (465, 451388), (470, 446586), (490, 428358), (564, 372155), (588, 356965), (620, 338541), (651, 322420), (658, 318990), (686, 305970), (705, 297724), (735, 285572), (868, 241815), (930, 225694), (940, 223293), (980, 214179), (987, 212660), (1029, 203980), (1085, 193452), (1302, 161210), (1316, 159495), (1372, 152985), (1410, 148862), (1457, 144060), (1470, 142786), (1519, 138180), (1645, 127596), (1715, 122388), (1860, 112847), (1974, 106330), (2058, 101990), (2170, 96726), (2303, 91140), (2401, 87420), (2604, 80605), (2820, 74431), (2914, 72030), (2940, 71393), (3038, 69090), (3255, 64484), (3290, 63798), (3430, 61194), (3948, 53165), (4116, 50995), (4340, 48363), (4371, 48020), (4557, 46060), (4606, 45570), (4802, 43710), (4935, 42532), (5145, 40796), (5828, 36015), (6076, 34545), (6510, 32242), (6580, 31899), (6860, 30597), (6909, 30380), (7203, 29140), (7285, 28812), (7595, 27636), (8742, 24010), (9114, 23030), (9212, 22785), (9604, 21855), (9870, 21266), (10199, 20580), (10290, 20398), (10633, 19740), (11515, 18228), (12005, 17484), (13020, 16121), (13818, 15190), (14406, 14570)]