20557004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7459}}^1$

素因数の和:7529

約数の個数: 24

約数和(自身を含む): 39478320

約数和(自身を除く): 18921316

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7459, 14918, 29836, 96967, 193934, 387868, 395327, 790654, 1581308, 5139251, 10278502, 20557004]

約数ペア:

[(1, 20557004), (2, 10278502), (4, 5139251), (13, 1581308), (26, 790654), (52, 395327), (53, 387868), (106, 193934), (212, 96967), (689, 29836), (1378, 14918), (2756, 7459)]