21155640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:114

約数の個数: 192

約数和(自身を含む): 73543680

約数和(自身を除く): 52388040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 47, 55, 60, 62, 66, 88, 93, 94, 110, 120, 121, 124, 132, 141, 155, 165, 186, 188, 220, 235, 242, 248, 264, 282, 310, 330, 341, 363, 372, 376, 440, 465, 470, 484, 517, 564, 605, 620, 660, 682, 705, 726, 744, 930, 940, 968, 1023, 1034, 1128, 1210, 1240, 1320, 1364, 1410, 1452, 1457, 1551, 1705, 1815, 1860, 1880, 2046, 2068, 2420, 2585, 2728, 2820, 2904, 2914, 3102, 3410, 3630, 3720, 3751, 4092, 4136, 4371, 4840, 5115, 5170, 5640, 5687, 5828, 6204, 6820, 7260, 7285, 7502, 7755, 8184, 8742, 10230, 10340, 11253, 11374, 11656, 12408, 13640, 14520, 14570, 15004, 15510, 16027, 17061, 17484, 18755, 20460, 20680, 21855, 22506, 22748, 28435, 29140, 30008, 31020, 32054, 34122, 34968, 37510, 40920, 43710, 45012, 45496, 48081, 56265, 56870, 58280, 62040, 64108, 68244, 75020, 80135, 85305, 87420, 90024, 96162, 112530, 113740, 128216, 136488, 150040, 160270, 170610, 174840, 176297, 192324, 225060, 227480, 240405, 320540, 341220, 352594, 384648, 450120, 480810, 528891, 641080, 682440, 705188, 881485, 961620, 1057782, 1410376, 1762970, 1923240, 2115564, 2644455, 3525940, 4231128, 5288910, 7051880, 10577820, 21155640]

約数ペア:

[(1, 21155640), (2, 10577820), (3, 7051880), (4, 5288910), (5, 4231128), (6, 3525940), (8, 2644455), (10, 2115564), (11, 1923240), (12, 1762970), (15, 1410376), (20, 1057782), (22, 961620), (24, 881485), (30, 705188), (31, 682440), (33, 641080), (40, 528891), (44, 480810), (47, 450120), (55, 384648), (60, 352594), (62, 341220), (66, 320540), (88, 240405), (93, 227480), (94, 225060), (110, 192324), (120, 176297), (121, 174840), (124, 170610), (132, 160270), (141, 150040), (155, 136488), (165, 128216), (186, 113740), (188, 112530), (220, 96162), (235, 90024), (242, 87420), (248, 85305), (264, 80135), (282, 75020), (310, 68244), (330, 64108), (341, 62040), (363, 58280), (372, 56870), (376, 56265), (440, 48081), (465, 45496), (470, 45012), (484, 43710), (517, 40920), (564, 37510), (605, 34968), (620, 34122), (660, 32054), (682, 31020), (705, 30008), (726, 29140), (744, 28435), (930, 22748), (940, 22506), (968, 21855), (1023, 20680), (1034, 20460), (1128, 18755), (1210, 17484), (1240, 17061), (1320, 16027), (1364, 15510), (1410, 15004), (1452, 14570), (1457, 14520), (1551, 13640), (1705, 12408), (1815, 11656), (1860, 11374), (1880, 11253), (2046, 10340), (2068, 10230), (2420, 8742), (2585, 8184), (2728, 7755), (2820, 7502), (2904, 7285), (2914, 7260), (3102, 6820), (3410, 6204), (3630, 5828), (3720, 5687), (3751, 5640), (4092, 5170), (4136, 5115), (4371, 4840)]