21108133072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101481409}}^1$

素因数の和:101481430

約数の個数: 20

約数和(自身を含む): 44042931940

約数和(自身を除く): 22934798868

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101481409, 202962818, 405925636, 811851272, 1319258317, 1623702544, 2638516634, 5277033268, 10554066536, 21108133072]

約数ペア:

[(1, 21108133072), (2, 10554066536), (4, 5277033268), (8, 2638516634), (13, 1623702544), (16, 1319258317), (26, 811851272), (52, 405925636), (104, 202962818), (208, 101481409)]