27281891

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 36556800

約数和(自身を除く): 9274909

約数列:

[1, 7, 13, 19, 31, 91, 133, 217, 247, 403, 509, 589, 1729, 2821, 3563, 4123, 6617, 7657, 9671, 15779, 46319, 53599, 67697, 110453, 125723, 205127, 299801, 880061, 1435889, 2098607, 3897413, 27281891]

約数ペア:

[(1, 27281891), (7, 3897413), (13, 2098607), (19, 1435889), (31, 880061), (91, 299801), (133, 205127), (217, 125723), (247, 110453), (403, 67697), (509, 53599), (589, 46319), (1729, 15779), (2821, 9671), (3563, 7657), (4123, 6617)]