18306275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 26664960

約数和(自身を除く): 8358685

約数列:

[1, 5, 13, 23, 25, 31, 65, 79, 115, 155, 299, 325, 395, 403, 575, 713, 775, 1027, 1495, 1817, 1975, 2015, 2449, 3565, 5135, 7475, 9085, 9269, 10075, 12245, 17825, 23621, 25675, 31837, 45425, 46345, 56327, 61225, 118105, 159185, 231725, 281635, 590525, 732251, 795925, 1408175, 3661255, 18306275]

約数ペア:

[(1, 18306275), (5, 3661255), (13, 1408175), (23, 795925), (25, 732251), (31, 590525), (65, 281635), (79, 231725), (115, 159185), (155, 118105), (299, 61225), (325, 56327), (395, 46345), (403, 45425), (575, 31837), (713, 25675), (775, 23621), (1027, 17825), (1495, 12245), (1817, 10075), (1975, 9269), (2015, 9085), (2449, 7475), (3565, 5135)]