81378711

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{2207}}^1$

素因数の和:2471

約数の個数: 24

約数和(自身を含む): 125034624

約数和(自身を除く): 43655913

約数列:

[1, 3, 9, 17, 51, 153, 241, 723, 2169, 2207, 4097, 6621, 12291, 19863, 36873, 37519, 112557, 337671, 531887, 1595661, 4786983, 9042079, 27126237, 81378711]

約数ペア:

[(1, 81378711), (3, 27126237), (9, 9042079), (17, 4786983), (51, 1595661), (153, 531887), (241, 337671), (723, 112557), (2169, 37519), (2207, 36873), (4097, 19863), (6621, 12291)]