215943

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1$

素因数の和:143

約数の個数: 24

約数和(自身を含む): 363888

約数和(自身を除く): 147945

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 113, 147, 273, 339, 637, 791, 1469, 1911, 2373, 4407, 5537, 10283, 16611, 30849, 71981, 215943]

約数ペア:

[(1, 215943), (3, 71981), (7, 30849), (13, 16611), (21, 10283), (39, 5537), (49, 4407), (91, 2373), (113, 1911), (147, 1469), (273, 791), (339, 637)]