81510440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^3\times {\mathrm{1531}}^1$

素因数の和:1575

約数の個数: 64

約数和(自身を含む): 201856320

約数和(自身を除く): 120345880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 1331, 1531, 2420, 2662, 3062, 4840, 5324, 6124, 6655, 7655, 10648, 12248, 13310, 15310, 16841, 26620, 30620, 33682, 53240, 61240, 67364, 84205, 134728, 168410, 185251, 336820, 370502, 673640, 741004, 926255, 1482008, 1852510, 2037761, 3705020, 4075522, 7410040, 8151044, 10188805, 16302088, 20377610, 40755220, 81510440]

約数ペア:

[(1, 81510440), (2, 40755220), (4, 20377610), (5, 16302088), (8, 10188805), (10, 8151044), (11, 7410040), (20, 4075522), (22, 3705020), (40, 2037761), (44, 1852510), (55, 1482008), (88, 926255), (110, 741004), (121, 673640), (220, 370502), (242, 336820), (440, 185251), (484, 168410), (605, 134728), (968, 84205), (1210, 67364), (1331, 61240), (1531, 53240), (2420, 33682), (2662, 30620), (3062, 26620), (4840, 16841), (5324, 15310), (6124, 13310), (6655, 12248), (7655, 10648)]