18237261

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1279}}^1$

素因数の和:1393

約数の個数: 24

約数和(自身を含む): 28600320

約数和(自身を除く): 10363059

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 1279, 2037, 3837, 4753, 8953, 14259, 26859, 62671, 124063, 188013, 372189, 868441, 2605323, 6079087, 18237261]

約数ペア:

[(1, 18237261), (3, 6079087), (7, 2605323), (21, 868441), (49, 372189), (97, 188013), (147, 124063), (291, 62671), (679, 26859), (1279, 14259), (2037, 8953), (3837, 4753)]