21424975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{461}}^1$

素因数の和:508

約数の個数: 36

約数和(自身を含む): 31451112

約数和(自身を除く): 10026137

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 169, 275, 325, 461, 715, 845, 1859, 2305, 3575, 4225, 5071, 5993, 9295, 11525, 25355, 29965, 46475, 65923, 77909, 126775, 149825, 329615, 389545, 856999, 1648075, 1947725, 4284995, 21424975]

約数ペア:

[(1, 21424975), (5, 4284995), (11, 1947725), (13, 1648075), (25, 856999), (55, 389545), (65, 329615), (143, 149825), (169, 126775), (275, 77909), (325, 65923), (461, 46475), (715, 29965), (845, 25355), (1859, 11525), (2305, 9295), (3575, 5993), (4225, 5071)]