20943620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25541}}^1$

素因数の和:25591

約数の個数: 24

約数和(自身を含む): 45056088

約数和(自身を除く): 24112468

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25541, 51082, 102164, 127705, 255410, 510820, 1047181, 2094362, 4188724, 5235905, 10471810, 20943620]

約数ペア:

[(1, 20943620), (2, 10471810), (4, 5235905), (5, 4188724), (10, 2094362), (20, 1047181), (41, 510820), (82, 255410), (164, 127705), (205, 102164), (410, 51082), (820, 25541)]