18120355

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:579

約数の個数: 24

約数和(自身を含む): 24342192

約数和(自身を除く): 6221837

約数列:

[1, 5, 11, 55, 61, 121, 305, 491, 605, 671, 2455, 3355, 5401, 7381, 27005, 29951, 36905, 59411, 149755, 297055, 329461, 1647305, 3624071, 18120355]

約数ペア:

[(1, 18120355), (5, 3624071), (11, 1647305), (55, 329461), (61, 297055), (121, 149755), (305, 59411), (491, 36905), (605, 29951), (671, 27005), (2455, 7381), (3355, 5401)]