81662680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{5987}}^1$

素因数の和:6040

約数の個数: 64

約数和(自身を含む): 206945280

約数和(自身を除く): 125282600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2728, 3410, 5987, 6820, 11974, 13640, 23948, 29935, 47896, 59870, 65857, 119740, 131714, 185597, 239480, 263428, 329285, 371194, 526856, 658570, 742388, 927985, 1317140, 1484776, 1855970, 2041567, 2634280, 3711940, 4083134, 7423880, 8166268, 10207835, 16332536, 20415670, 40831340, 81662680]

約数ペア:

[(1, 81662680), (2, 40831340), (4, 20415670), (5, 16332536), (8, 10207835), (10, 8166268), (11, 7423880), (20, 4083134), (22, 3711940), (31, 2634280), (40, 2041567), (44, 1855970), (55, 1484776), (62, 1317140), (88, 927985), (110, 742388), (124, 658570), (155, 526856), (220, 371194), (248, 329285), (310, 263428), (341, 239480), (440, 185597), (620, 131714), (682, 119740), (1240, 65857), (1364, 59870), (1705, 47896), (2728, 29935), (3410, 23948), (5987, 13640), (6820, 11974)]