18138561

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 10753599

約数列:

[1, 3, 7, 21, 43, 53, 129, 159, 301, 371, 379, 903, 1113, 1137, 2279, 2653, 6837, 7959, 15953, 16297, 20087, 47859, 48891, 60261, 114079, 140609, 342237, 421827, 863741, 2591223, 6046187, 18138561]

約数ペア:

[(1, 18138561), (3, 6046187), (7, 2591223), (21, 863741), (43, 421827), (53, 342237), (129, 140609), (159, 114079), (301, 60261), (371, 48891), (379, 47859), (903, 20087), (1113, 16297), (1137, 15953), (2279, 7959), (2653, 6837)]