21996325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1277}}^1$

素因数の和:1353

約数の個数: 24

約数和(自身を含む): 29951208

約数和(自身を除く): 7954883

約数列:

[1, 5, 13, 25, 53, 65, 265, 325, 689, 1277, 1325, 3445, 6385, 16601, 17225, 31925, 67681, 83005, 338405, 415025, 879853, 1692025, 4399265, 21996325]

約数ペア:

[(1, 21996325), (5, 4399265), (13, 1692025), (25, 879853), (53, 415025), (65, 338405), (265, 83005), (325, 67681), (689, 31925), (1277, 17225), (1325, 16601), (3445, 6385)]