21250216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{204329}}^1$

素因数の和:204348

約数の個数: 16

約数和(自身を含む): 42909300

約数和(自身を除く): 21659084

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 204329, 408658, 817316, 1634632, 2656277, 5312554, 10625108, 21250216]

約数ペア:

[(1, 21250216), (2, 10625108), (4, 5312554), (8, 2656277), (13, 1634632), (26, 817316), (52, 408658), (104, 204329)]