161131640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{98251}}^1$

素因数の和:98303

約数の個数: 32

約数和(自身を含む): 371392560

約数和(自身を除く): 210260920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 98251, 196502, 393004, 491255, 786008, 982510, 1965020, 3930040, 4028291, 8056582, 16113164, 20141455, 32226328, 40282910, 80565820, 161131640]

約数ペア:

[(1, 161131640), (2, 80565820), (4, 40282910), (5, 32226328), (8, 20141455), (10, 16113164), (20, 8056582), (40, 4028291), (41, 3930040), (82, 1965020), (164, 982510), (205, 786008), (328, 491255), (410, 393004), (820, 196502), (1640, 98251)]