16921705

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:684

約数の個数: 16

約数和(自身を含む): 20869200

約数和(自身を除く): 3947495

約数列:

[1, 5, 61, 109, 305, 509, 545, 2545, 6649, 31049, 33245, 55481, 155245, 277405, 3384341, 16921705]

約数ペア:

[(1, 16921705), (5, 3384341), (61, 277405), (109, 155245), (305, 55481), (509, 33245), (545, 31049), (2545, 6649)]