21517925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{463}}^1$

素因数の和:510

約数の個数: 36

約数和(自身を含む): 31587264

約数和(自身を除く): 10069339

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 169, 275, 325, 463, 715, 845, 1859, 2315, 3575, 4225, 5093, 6019, 9295, 11575, 25465, 30095, 46475, 66209, 78247, 127325, 150475, 331045, 391235, 860717, 1655225, 1956175, 4303585, 21517925]

約数ペア:

[(1, 21517925), (5, 4303585), (11, 1956175), (13, 1655225), (25, 860717), (55, 391235), (65, 331045), (143, 150475), (169, 127325), (275, 78247), (325, 66209), (463, 46475), (715, 30095), (845, 25465), (1859, 11575), (2315, 9295), (3575, 6019), (4225, 5093)]