321031875

素因数分解:

$3^1\times 5^4\times {\mathrm{131}}^1\times {\mathrm{1307}}^1$

素因数の和:1461

約数の個数: 40

約数和(自身を含む): 539377344

約数和(自身を除く): 218345469

約数列:

[1, 3, 5, 15, 25, 75, 125, 131, 375, 393, 625, 655, 1307, 1875, 1965, 3275, 3921, 6535, 9825, 16375, 19605, 32675, 49125, 81875, 98025, 163375, 171217, 245625, 490125, 513651, 816875, 856085, 2450625, 2568255, 4280425, 12841275, 21402125, 64206375, 107010625, 321031875]

約数ペア:

[(1, 321031875), (3, 107010625), (5, 64206375), (15, 21402125), (25, 12841275), (75, 4280425), (125, 2568255), (131, 2450625), (375, 856085), (393, 816875), (625, 513651), (655, 490125), (1307, 245625), (1875, 171217), (1965, 163375), (3275, 98025), (3921, 81875), (6535, 49125), (9825, 32675), (16375, 19605)]