18391580

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4621}}^1$

素因数の和:4829

約数の個数: 24

約数和(自身を含む): 38824800

約数和(自身を除く): 20433220

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4621, 9242, 18484, 23105, 46210, 92420, 919579, 1839158, 3678316, 4597895, 9195790, 18391580]

約数ペア:

[(1, 18391580), (2, 9195790), (4, 4597895), (5, 3678316), (10, 1839158), (20, 919579), (199, 92420), (398, 46210), (796, 23105), (995, 18484), (1990, 9242), (3980, 4621)]