21918507

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{1009}}^1$

素因数の和:1582

約数の個数: 16

約数和(自身を含む): 31560480

約数和(自身を除く): 9641973

約数列:

[1, 3, 13, 39, 557, 1009, 1671, 3027, 7241, 13117, 21723, 39351, 562013, 1686039, 7306169, 21918507]

約数ペア:

[(1, 21918507), (3, 7306169), (13, 1686039), (39, 562013), (557, 39351), (1009, 21723), (1671, 13117), (3027, 7241)]