21476715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{457}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 37240896

約数和(自身を除く): 15764181

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 241, 457, 723, 1205, 1371, 2285, 3133, 3615, 5941, 6855, 9399, 15665, 17823, 29705, 46995, 89115, 110137, 330411, 550685, 1431781, 1652055, 4295343, 7158905, 21476715]

約数ペア:

[(1, 21476715), (3, 7158905), (5, 4295343), (13, 1652055), (15, 1431781), (39, 550685), (65, 330411), (195, 110137), (241, 89115), (457, 46995), (723, 29705), (1205, 17823), (1371, 15665), (2285, 9399), (3133, 6855), (3615, 5941)]