2019900475

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{279571}}^1$

素因数の和:279615

約数の個数: 18

約数和(自身を含む): 2660686724

約数和(自身を除く): 640786249

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 279571, 1397855, 4752707, 6989275, 23763535, 80796019, 118817675, 403980095, 2019900475]

約数ペア:

[(1, 2019900475), (5, 403980095), (17, 118817675), (25, 80796019), (85, 23763535), (289, 6989275), (425, 4752707), (1445, 1397855), (7225, 279571)]