25704848

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{123581}}^1$

素因数の和:123602

約数の個数: 20

約数和(自身を含む): 53634588

約数和(自身を除く): 27929740

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 123581, 247162, 494324, 988648, 1606553, 1977296, 3213106, 6426212, 12852424, 25704848]

約数ペア:

[(1, 25704848), (2, 12852424), (4, 6426212), (8, 3213106), (13, 1977296), (16, 1606553), (26, 988648), (52, 494324), (104, 247162), (208, 123581)]