397921875

素因数分解:

$3^1\times 5^6\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:699

約数の個数: 56

約数和(自身を含む): 715303344

約数和(自身を除く): 317381469

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 653, 975, 1625, 1875, 1959, 3125, 3265, 4875, 8125, 8489, 9375, 9795, 15625, 16325, 24375, 25467, 40625, 42445, 46875, 48975, 81625, 121875, 127335, 203125, 212225, 244875, 408125, 609375, 636675, 1061125, 1224375, 2040625, 3183375, 5305625, 6121875, 10203125, 15916875, 26528125, 30609375, 79584375, 132640625, 397921875]

約数ペア:

[(1, 397921875), (3, 132640625), (5, 79584375), (13, 30609375), (15, 26528125), (25, 15916875), (39, 10203125), (65, 6121875), (75, 5305625), (125, 3183375), (195, 2040625), (325, 1224375), (375, 1061125), (625, 636675), (653, 609375), (975, 408125), (1625, 244875), (1875, 212225), (1959, 203125), (3125, 127335), (3265, 121875), (4875, 81625), (8125, 48975), (8489, 46875), (9375, 42445), (9795, 40625), (15625, 25467), (16325, 24375)]