157711640

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{6151}}^1$

素因数の和:6803

約数の個数: 32

約数和(自身を含む): 355462560

約数和(自身を除く): 197750920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6151, 6410, 12302, 12820, 24604, 25640, 30755, 49208, 61510, 123020, 246040, 3942791, 7885582, 15771164, 19713955, 31542328, 39427910, 78855820, 157711640]

約数ペア:

[(1, 157711640), (2, 78855820), (4, 39427910), (5, 31542328), (8, 19713955), (10, 15771164), (20, 7885582), (40, 3942791), (641, 246040), (1282, 123020), (2564, 61510), (3205, 49208), (5128, 30755), (6151, 25640), (6410, 24604), (12302, 12820)]