20988375

素因数分解:

$3^1\times 5^3\times {\mathrm{97}}^1\times {\mathrm{577}}^1$

素因数の和:692

約数の個数: 32

約数和(自身を含む): 35345856

約数和(自身を除く): 14357481

約数列:

[1, 3, 5, 15, 25, 75, 97, 125, 291, 375, 485, 577, 1455, 1731, 2425, 2885, 7275, 8655, 12125, 14425, 36375, 43275, 55969, 72125, 167907, 216375, 279845, 839535, 1399225, 4197675, 6996125, 20988375]

約数ペア:

[(1, 20988375), (3, 6996125), (5, 4197675), (15, 1399225), (25, 839535), (75, 279845), (97, 216375), (125, 167907), (291, 72125), (375, 55969), (485, 43275), (577, 36375), (1455, 14425), (1731, 12125), (2425, 8655), (2885, 7275)]