21599975

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 27891072

約数和(自身を除く): 6291097

約数列:

[1, 5, 25, 43, 71, 215, 283, 355, 1075, 1415, 1775, 3053, 7075, 12169, 15265, 20093, 60845, 76325, 100465, 304225, 502325, 863999, 4319995, 21599975]

約数ペア:

[(1, 21599975), (5, 4319995), (25, 863999), (43, 502325), (71, 304225), (215, 100465), (283, 76325), (355, 60845), (1075, 20093), (1415, 15265), (1775, 12169), (3053, 7075)]