21840615056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105002957}}^1$

素因数の和:105002978

約数の個数: 20

約数和(自身を含む): 45571283772

約数和(自身を除く): 23730668716

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105002957, 210005914, 420011828, 840023656, 1365038441, 1680047312, 2730076882, 5460153764, 10920307528, 21840615056]

約数ペア:

[(1, 21840615056), (2, 10920307528), (4, 5460153764), (8, 2730076882), (13, 1680047312), (16, 1365038441), (26, 840023656), (52, 420011828), (104, 210005914), (208, 105002957)]