81391980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{1613}}^1$

素因数の和:1683

約数の個数: 72

約数和(自身を含む): 236173392

約数和(自身を除く): 154781412

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 841, 870, 1613, 1682, 1740, 2523, 3226, 3364, 4205, 4839, 5046, 6452, 8065, 8410, 9678, 10092, 12615, 16130, 16820, 19356, 24195, 25230, 32260, 46777, 48390, 50460, 93554, 96780, 140331, 187108, 233885, 280662, 467770, 561324, 701655, 935540, 1356533, 1403310, 2713066, 2806620, 4069599, 5426132, 6782665, 8139198, 13565330, 16278396, 20347995, 27130660, 40695990, 81391980]

約数ペア:

[(1, 81391980), (2, 40695990), (3, 27130660), (4, 20347995), (5, 16278396), (6, 13565330), (10, 8139198), (12, 6782665), (15, 5426132), (20, 4069599), (29, 2806620), (30, 2713066), (58, 1403310), (60, 1356533), (87, 935540), (116, 701655), (145, 561324), (174, 467770), (290, 280662), (348, 233885), (435, 187108), (580, 140331), (841, 96780), (870, 93554), (1613, 50460), (1682, 48390), (1740, 46777), (2523, 32260), (3226, 25230), (3364, 24195), (4205, 19356), (4839, 16820), (5046, 16130), (6452, 12615), (8065, 10092), (8410, 9678)]