19664021

素因数分解:

${\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:392

約数の個数: 16

約数和(自身を含む): 21800688

約数和(自身を除く): 2136667

約数列:

[1, 13, 61, 137, 181, 793, 1781, 2353, 8357, 11041, 24797, 108641, 143533, 322361, 1512617, 19664021]

約数ペア:

[(1, 19664021), (13, 1512617), (61, 322361), (137, 143533), (181, 108641), (793, 24797), (1781, 11041), (2353, 8357)]