1285289980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{21587}}^1$

素因数の和:21838

約数の個数: 48

約数和(自身を含む): 2919561120

約数和(自身を除く): 1634271140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 229, 260, 458, 916, 1145, 2290, 2977, 4580, 5954, 11908, 14885, 21587, 29770, 43174, 59540, 86348, 107935, 215870, 280631, 431740, 561262, 1122524, 1403155, 2806310, 4943423, 5612620, 9886846, 19773692, 24717115, 49434230, 64264499, 98868460, 128528998, 257057996, 321322495, 642644990, 1285289980]

約数ペア:

[(1, 1285289980), (2, 642644990), (4, 321322495), (5, 257057996), (10, 128528998), (13, 98868460), (20, 64264499), (26, 49434230), (52, 24717115), (65, 19773692), (130, 9886846), (229, 5612620), (260, 4943423), (458, 2806310), (916, 1403155), (1145, 1122524), (2290, 561262), (2977, 431740), (4580, 280631), (5954, 215870), (11908, 107935), (14885, 86348), (21587, 59540), (29770, 43174)]