81689240

素因数分解:

$2^3\times 5^1\times {\mathrm{857}}^1\times {\mathrm{2383}}^1$

素因数の和:3251

約数の個数: 32

約数和(自身を含む): 184092480

約数和(自身を除く): 102403240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 857, 1714, 2383, 3428, 4285, 4766, 6856, 8570, 9532, 11915, 17140, 19064, 23830, 34280, 47660, 95320, 2042231, 4084462, 8168924, 10211155, 16337848, 20422310, 40844620, 81689240]

約数ペア:

[(1, 81689240), (2, 40844620), (4, 20422310), (5, 16337848), (8, 10211155), (10, 8168924), (20, 4084462), (40, 2042231), (857, 95320), (1714, 47660), (2383, 34280), (3428, 23830), (4285, 19064), (4766, 17140), (6856, 11915), (8570, 9532)]