21581079

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10594281

約数列:

[1, 3, 13, 39, 59, 83, 113, 177, 249, 339, 767, 1079, 1469, 2301, 3237, 4407, 4897, 6667, 9379, 14691, 20001, 28137, 63661, 86671, 121927, 190983, 260013, 365781, 553361, 1660083, 7193693, 21581079]

約数ペア:

[(1, 21581079), (3, 7193693), (13, 1660083), (39, 553361), (59, 365781), (83, 260013), (113, 190983), (177, 121927), (249, 86671), (339, 63661), (767, 28137), (1079, 20001), (1469, 14691), (2301, 9379), (3237, 6667), (4407, 4897)]