20122875

素因数分解:

$3^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{577}}^1$

素因数の和:629

約数の個数: 48

約数和(自身を含む): 37509888

約数和(自身を除く): 17387013

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 125, 155, 225, 279, 375, 465, 577, 775, 1125, 1395, 1731, 2325, 2885, 3875, 5193, 6975, 8655, 11625, 14425, 17887, 25965, 34875, 43275, 53661, 72125, 89435, 129825, 160983, 216375, 268305, 447175, 649125, 804915, 1341525, 2235875, 4024575, 6707625, 20122875]

約数ペア:

[(1, 20122875), (3, 6707625), (5, 4024575), (9, 2235875), (15, 1341525), (25, 804915), (31, 649125), (45, 447175), (75, 268305), (93, 216375), (125, 160983), (155, 129825), (225, 89435), (279, 72125), (375, 53661), (465, 43275), (577, 34875), (775, 25965), (1125, 17887), (1395, 14425), (1731, 11625), (2325, 8655), (2885, 6975), (3875, 5193)]