217977405

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{4421}}^1$

素因数の和:4621

約数の個数: 32

約数和(自身を含む): 369325440

約数和(自身を除く): 151348035

約数列:

[1, 3, 5, 15, 19, 57, 95, 173, 285, 519, 865, 2595, 3287, 4421, 9861, 13263, 16435, 22105, 49305, 66315, 83999, 251997, 419995, 764833, 1259985, 2294499, 3824165, 11472495, 14531827, 43595481, 72659135, 217977405]

約数ペア:

[(1, 217977405), (3, 72659135), (5, 43595481), (15, 14531827), (19, 11472495), (57, 3824165), (95, 2294499), (173, 1259985), (285, 764833), (519, 419995), (865, 251997), (2595, 83999), (3287, 66315), (4421, 49305), (9861, 22105), (13263, 16435)]