21189715

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{2437}}^1$

素因数の和:2526

約数の個数: 16

約数和(自身を含む): 26681472

約数和(自身を除く): 5491757

約数列:

[1, 5, 37, 47, 185, 235, 1739, 2437, 8695, 12185, 90169, 114539, 450845, 572695, 4237943, 21189715]

約数ペア:

[(1, 21189715), (5, 4237943), (37, 572695), (47, 450845), (185, 114539), (235, 90169), (1739, 12185), (2437, 8695)]