21055625

素因数分解:

$5^4\times {\mathrm{59}}^1\times {\mathrm{571}}^1$

素因数の和:650

約数の個数: 20

約数和(自身を含む): 26803920

約数和(自身を除く): 5748295

約数列:

[1, 5, 25, 59, 125, 295, 571, 625, 1475, 2855, 7375, 14275, 33689, 36875, 71375, 168445, 356875, 842225, 4211125, 21055625]

約数ペア:

[(1, 21055625), (5, 4211125), (25, 842225), (59, 356875), (125, 168445), (295, 71375), (571, 36875), (625, 33689), (1475, 14275), (2855, 7375)]