21052625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 29248128

約数和(自身を除く): 8195503

約数列:

[1, 5, 11, 25, 55, 61, 125, 251, 275, 305, 671, 1255, 1375, 1525, 2761, 3355, 6275, 7625, 13805, 15311, 16775, 31375, 69025, 76555, 83875, 168421, 345125, 382775, 842105, 1913875, 4210525, 21052625]

約数ペア:

[(1, 21052625), (5, 4210525), (11, 1913875), (25, 842105), (55, 382775), (61, 345125), (125, 168421), (251, 83875), (275, 76555), (305, 69025), (671, 31375), (1255, 16775), (1375, 15311), (1525, 13805), (2761, 7625), (3355, 6275)]