21041205

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{859}}^1$

素因数の和:961

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 14624715

約数列:

[1, 3, 5, 15, 23, 69, 71, 115, 213, 345, 355, 859, 1065, 1633, 2577, 4295, 4899, 8165, 12885, 19757, 24495, 59271, 60989, 98785, 182967, 296355, 304945, 914835, 1402747, 4208241, 7013735, 21041205]

約数ペア:

[(1, 21041205), (3, 7013735), (5, 4208241), (15, 1402747), (23, 914835), (69, 304945), (71, 296355), (115, 182967), (213, 98785), (345, 60989), (355, 59271), (859, 24495), (1065, 19757), (1633, 12885), (2577, 8165), (4295, 4899)]