20861469

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:231

約数の個数: 40

約数和(自身を含む): 32931360

約数和(自身を除く): 12069891

約数列:

[1, 3, 9, 27, 29, 81, 83, 87, 107, 249, 261, 321, 747, 783, 963, 2241, 2349, 2407, 2889, 3103, 6723, 7221, 8667, 8881, 9309, 21663, 26643, 27927, 64989, 79929, 83781, 194967, 239787, 251343, 257549, 719361, 772647, 2317941, 6953823, 20861469]

約数ペア:

[(1, 20861469), (3, 6953823), (9, 2317941), (27, 772647), (29, 719361), (81, 257549), (83, 251343), (87, 239787), (107, 194967), (249, 83781), (261, 79929), (321, 64989), (747, 27927), (783, 26643), (963, 21663), (2241, 9309), (2349, 8881), (2407, 8667), (2889, 7221), (3103, 6723)]