21570993

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 32192160

約数和(自身を除く): 10621167

約数列:

[1, 3, 9, 43, 129, 139, 387, 401, 417, 1203, 1251, 3609, 5977, 17243, 17931, 51729, 53793, 55739, 155187, 167217, 501651, 2396777, 7190331, 21570993]

約数ペア:

[(1, 21570993), (3, 7190331), (9, 2396777), (43, 501651), (129, 167217), (139, 155187), (387, 55739), (401, 53793), (417, 51729), (1203, 17931), (1251, 17243), (3609, 5977)]