21495655

素因数分解:

$5^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:498

約数の個数: 16

約数和(自身を含む): 26278560

約数和(自身を除く): 4782905

約数列:

[1, 5, 139, 157, 197, 695, 785, 985, 21823, 27383, 30929, 109115, 136915, 154645, 4299131, 21495655]

約数ペア:

[(1, 21495655), (5, 4299131), (139, 154645), (157, 136915), (197, 109115), (695, 30929), (785, 27383), (985, 21823)]