20215461

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 32124928

約数和(自身を除く): 11909467

約数列:

[1, 3, 7, 21, 43, 61, 129, 183, 301, 367, 427, 903, 1101, 1281, 2569, 2623, 7707, 7869, 15781, 18361, 22387, 47343, 55083, 67161, 110467, 156709, 331401, 470127, 962641, 2887923, 6738487, 20215461]

約数ペア:

[(1, 20215461), (3, 6738487), (7, 2887923), (21, 962641), (43, 470127), (61, 331401), (129, 156709), (183, 110467), (301, 67161), (367, 55083), (427, 47343), (903, 22387), (1101, 18361), (1281, 15781), (2569, 7869), (2623, 7707)]