210537275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20897}}^1$

素因数の和:20951

約数の個数: 24

約数和(自身を含む): 290231424

約数和(自身を除く): 79694149

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 10075, 20897, 104485, 271661, 522425, 647807, 1358305, 3239035, 6791525, 8421491, 16195175, 42107455, 210537275]

約数ペア:

[(1, 210537275), (5, 42107455), (13, 16195175), (25, 8421491), (31, 6791525), (65, 3239035), (155, 1358305), (325, 647807), (403, 522425), (775, 271661), (2015, 104485), (10075, 20897)]