21521925

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2333}}^1$

素因数の和:2390

約数の個数: 36

約数和(自身を含む): 39505284

約数和(自身を除く): 17983359

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 2333, 3075, 6999, 9225, 11665, 20997, 34995, 58325, 95653, 104985, 174975, 286959, 478265, 524925, 860877, 1434795, 2391325, 4304385, 7173975, 21521925]

約数ペア:

[(1, 21521925), (3, 7173975), (5, 4304385), (9, 2391325), (15, 1434795), (25, 860877), (41, 524925), (45, 478265), (75, 286959), (123, 174975), (205, 104985), (225, 95653), (369, 58325), (615, 34995), (1025, 20997), (1845, 11665), (2333, 9225), (3075, 6999)]