8320640

素因数分解:

$2^7\times 5^1\times {\mathrm{13001}}^1$

素因数の和:13020

約数の個数: 32

約数和(自身を含む): 19893060

約数和(自身を除く): 11572420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 13001, 26002, 52004, 65005, 104008, 130010, 208016, 260020, 416032, 520040, 832064, 1040080, 1664128, 2080160, 4160320, 8320640]

約数ペア:

[(1, 8320640), (2, 4160320), (4, 2080160), (5, 1664128), (8, 1040080), (10, 832064), (16, 520040), (20, 416032), (32, 260020), (40, 208016), (64, 130010), (80, 104008), (128, 65005), (160, 52004), (320, 26002), (640, 13001)]