21095855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7237}}^1$

素因数の和:7306

約数の個数: 16

約数和(自身を含む): 28141344

約数和(自身を除く): 7045489

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 7237, 36185, 79607, 383561, 398035, 1917805, 4219171, 21095855]

約数ペア:

[(1, 21095855), (5, 4219171), (11, 1917805), (53, 398035), (55, 383561), (265, 79607), (583, 36185), (2915, 7237)]