131578490

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{907}}^1$

素因数の和:1166

約数の個数: 32

約数和(自身を含む): 241237440

約数和(自身を除く): 109658950

約数列:

[1, 2, 5, 10, 89, 163, 178, 326, 445, 815, 890, 907, 1630, 1814, 4535, 9070, 14507, 29014, 72535, 80723, 145070, 147841, 161446, 295682, 403615, 739205, 807230, 1478410, 13157849, 26315698, 65789245, 131578490]

約数ペア:

[(1, 131578490), (2, 65789245), (5, 26315698), (10, 13157849), (89, 1478410), (163, 807230), (178, 739205), (326, 403615), (445, 295682), (815, 161446), (890, 147841), (907, 145070), (1630, 80723), (1814, 72535), (4535, 29014), (9070, 14507)]