18556960

素因数分解:

$2^5\times 5^1\times {\mathrm{115981}}^1$

素因数の和:115996

約数の個数: 24

約数和(自身を含む): 43841196

約数和(自身を除く): 25284236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 115981, 231962, 463924, 579905, 927848, 1159810, 1855696, 2319620, 3711392, 4639240, 9278480, 18556960]

約数ペア:

[(1, 18556960), (2, 9278480), (4, 4639240), (5, 3711392), (8, 2319620), (10, 1855696), (16, 1159810), (20, 927848), (32, 579905), (40, 463924), (80, 231962), (160, 115981)]