21513969

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2659}}^1$

素因数の和:2725

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 11682831

約数列:

[1, 3, 9, 29, 31, 87, 93, 261, 279, 899, 2659, 2697, 7977, 8091, 23931, 77111, 82429, 231333, 247287, 693999, 741861, 2390441, 7171323, 21513969]

約数ペア:

[(1, 21513969), (3, 7171323), (9, 2390441), (29, 741861), (31, 693999), (87, 247287), (93, 231333), (261, 82429), (279, 77111), (899, 23931), (2659, 8091), (2697, 7977)]