21580452837

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{253819}}^1$

素因数の和:253942

約数の個数: 32

約数和(自身を含む): 33138739200

約数和(自身を除く): 11558286363

約数列:

[1, 3, 9, 27, 47, 67, 141, 201, 423, 603, 1269, 1809, 3149, 9447, 28341, 85023, 253819, 761457, 2284371, 6853113, 11929493, 17005873, 35788479, 51017619, 107365437, 153052857, 322096311, 459158571, 799276031, 2397828093, 7193484279, 21580452837]

約数ペア:

[(1, 21580452837), (3, 7193484279), (9, 2397828093), (27, 799276031), (47, 459158571), (67, 322096311), (141, 153052857), (201, 107365437), (423, 51017619), (603, 35788479), (1269, 17005873), (1809, 11929493), (3149, 6853113), (9447, 2284371), (28341, 761457), (85023, 253819)]