18660920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16087}}^1$

素因数の和:16127

約数の個数: 32

約数和(自身を含む): 43437600

約数和(自身を除く): 24776680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 16087, 32174, 64348, 80435, 128696, 160870, 321740, 466523, 643480, 933046, 1866092, 2332615, 3732184, 4665230, 9330460, 18660920]

約数ペア:

[(1, 18660920), (2, 9330460), (4, 4665230), (5, 3732184), (8, 2332615), (10, 1866092), (20, 933046), (29, 643480), (40, 466523), (58, 321740), (116, 160870), (145, 128696), (232, 80435), (290, 64348), (580, 32174), (1160, 16087)]