3978405

素因数分解:

$3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{419}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 6945120

約数和(自身を除く): 2966715

約数列:

[1, 3, 5, 9, 15, 45, 211, 419, 633, 1055, 1257, 1899, 2095, 3165, 3771, 6285, 9495, 18855, 88409, 265227, 442045, 795681, 1326135, 3978405]

約数ペア:

[(1, 3978405), (3, 1326135), (5, 795681), (9, 442045), (15, 265227), (45, 88409), (211, 18855), (419, 9495), (633, 6285), (1055, 3771), (1257, 3165), (1899, 2095)]