19753975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 25712640

約数和(自身を除く): 5958665

約数列:

[1, 5, 25, 31, 71, 155, 355, 359, 775, 1775, 1795, 2201, 8975, 11005, 11129, 25489, 55025, 55645, 127445, 278225, 637225, 790159, 3950795, 19753975]

約数ペア:

[(1, 19753975), (5, 3950795), (25, 790159), (31, 637225), (71, 278225), (155, 127445), (355, 55645), (359, 55025), (775, 25489), (1775, 11129), (1795, 11005), (2201, 8975)]