161489420

素因数分解:

$2^2\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{6323}}^1$

素因数の和:7609

約数の個数: 24

約数和(自身を含む): 339447024

約数和(自身を除く): 177957604

約数列:

[1, 2, 4, 5, 10, 20, 1277, 2554, 5108, 6323, 6385, 12646, 12770, 25292, 25540, 31615, 63230, 126460, 8074471, 16148942, 32297884, 40372355, 80744710, 161489420]

約数ペア:

[(1, 161489420), (2, 80744710), (4, 40372355), (5, 32297884), (10, 16148942), (20, 8074471), (1277, 126460), (2554, 63230), (5108, 31615), (6323, 25540), (6385, 25292), (12646, 12770)]