20129625

素因数分解:

$3^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{617}}^1$

素因数の和:667

約数の個数: 48

約数和(自身を含む): 37599120

約数和(自身を除く): 17469495

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 125, 145, 225, 261, 375, 435, 617, 725, 1125, 1305, 1851, 2175, 3085, 3625, 5553, 6525, 9255, 10875, 15425, 17893, 27765, 32625, 46275, 53679, 77125, 89465, 138825, 161037, 231375, 268395, 447325, 694125, 805185, 1341975, 2236625, 4025925, 6709875, 20129625]

約数ペア:

[(1, 20129625), (3, 6709875), (5, 4025925), (9, 2236625), (15, 1341975), (25, 805185), (29, 694125), (45, 447325), (75, 268395), (87, 231375), (125, 161037), (145, 138825), (225, 89465), (261, 77125), (375, 53679), (435, 46275), (617, 32625), (725, 27765), (1125, 17893), (1305, 15425), (1851, 10875), (2175, 9255), (3085, 6525), (3625, 5553)]