287156740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1104449}}^1$

素因数の和:1104471

約数の個数: 24

約数和(自身を含む): 649416600

約数和(自身を除く): 362259860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1104449, 2208898, 4417796, 5522245, 11044490, 14357837, 22088980, 28715674, 57431348, 71789185, 143578370, 287156740]

約数ペア:

[(1, 287156740), (2, 143578370), (4, 71789185), (5, 57431348), (10, 28715674), (13, 22088980), (20, 14357837), (26, 11044490), (52, 5522245), (65, 4417796), (130, 2208898), (260, 1104449)]