18774531

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 28920320

約数和(自身を除く): 10145789

約数列:

[1, 3, 9, 27, 43, 103, 129, 157, 309, 387, 471, 927, 1161, 1413, 2781, 4239, 4429, 6751, 13287, 16171, 20253, 39861, 48513, 60759, 119583, 145539, 182277, 436617, 695353, 2086059, 6258177, 18774531]

約数ペア:

[(1, 18774531), (3, 6258177), (9, 2086059), (27, 695353), (43, 436617), (103, 182277), (129, 145539), (157, 119583), (309, 60759), (387, 48513), (471, 39861), (927, 20253), (1161, 16171), (1413, 13287), (2781, 6751), (4239, 4429)]