21087866

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1\times {\mathrm{853}}^1$

素因数の和:1165

約数の個数: 16

約数和(自身を含む): 32465664

約数和(自身を除く): 11377798

約数列:

[1, 2, 47, 94, 263, 526, 853, 1706, 12361, 24722, 40091, 80182, 224339, 448678, 10543933, 21087866]

約数ペア:

[(1, 21087866), (2, 10543933), (47, 448678), (94, 224339), (263, 80182), (526, 40091), (853, 24722), (1706, 12361)]