18658125

素因数分解:

$3^2\times 5^4\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:164

約数の個数: 60

約数和(自身を含む): 35088768

約数和(自身を除く): 16430643

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 107, 125, 155, 225, 279, 321, 375, 465, 535, 625, 775, 963, 1125, 1395, 1605, 1875, 2325, 2675, 3317, 3875, 4815, 5625, 6975, 8025, 9951, 11625, 13375, 16585, 19375, 24075, 29853, 34875, 40125, 49755, 58125, 66875, 82925, 120375, 149265, 174375, 200625, 248775, 414625, 601875, 746325, 1243875, 2073125, 3731625, 6219375, 18658125]

約数ペア:

[(1, 18658125), (3, 6219375), (5, 3731625), (9, 2073125), (15, 1243875), (25, 746325), (31, 601875), (45, 414625), (75, 248775), (93, 200625), (107, 174375), (125, 149265), (155, 120375), (225, 82925), (279, 66875), (321, 58125), (375, 49755), (465, 40125), (535, 34875), (625, 29853), (775, 24075), (963, 19375), (1125, 16585), (1395, 13375), (1605, 11625), (1875, 9951), (2325, 8025), (2675, 6975), (3317, 5625), (3875, 4815)]