21907964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5333}}^1$

素因数の和:5429

約数の個数: 24

約数和(自身を含む): 41818560

約数和(自身を除く): 19910596

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5333, 10666, 21332, 69329, 138658, 277316, 421307, 842614, 1685228, 5476991, 10953982, 21907964]

約数ペア:

[(1, 21907964), (2, 10953982), (4, 5476991), (13, 1685228), (26, 842614), (52, 421307), (79, 277316), (158, 138658), (316, 69329), (1027, 21332), (2054, 10666), (4108, 5333)]