21105997

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{607}}^1$

素因数の和:756

約数の個数: 16

約数和(自身を含む): 24076800

約数和(自身を除く): 2970803

約数列:

[1, 11, 29, 109, 319, 607, 1199, 3161, 6677, 17603, 34771, 66163, 193633, 727793, 1918727, 21105997]

約数ペア:

[(1, 21105997), (11, 1918727), (29, 727793), (109, 193633), (319, 66163), (607, 34771), (1199, 17603), (3161, 6677)]