28698125

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:147

約数の個数: 40

約数和(自身を含む): 39531096

約数和(自身を除く): 10832971

約数列:

[1, 5, 17, 25, 37, 73, 85, 125, 185, 365, 425, 625, 629, 925, 1241, 1825, 2125, 2701, 3145, 4625, 6205, 9125, 10625, 13505, 15725, 23125, 31025, 45625, 45917, 67525, 78625, 155125, 229585, 337625, 393125, 775625, 1147925, 1688125, 5739625, 28698125]

約数ペア:

[(1, 28698125), (5, 5739625), (17, 1688125), (25, 1147925), (37, 775625), (73, 393125), (85, 337625), (125, 229585), (185, 155125), (365, 78625), (425, 67525), (625, 45917), (629, 45625), (925, 31025), (1241, 23125), (1825, 15725), (2125, 13505), (2701, 10625), (3145, 9125), (4625, 6205)]