71297840

素因数分解:

$2^4\times 5^1\times {\mathrm{891223}}^1$

素因数の和:891236

約数の個数: 20

約数和(自身を含む): 165767664

約数和(自身を除く): 94469824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 891223, 1782446, 3564892, 4456115, 7129784, 8912230, 14259568, 17824460, 35648920, 71297840]

約数ペア:

[(1, 71297840), (2, 35648920), (4, 17824460), (5, 14259568), (8, 8912230), (10, 7129784), (16, 4456115), (20, 3564892), (40, 1782446), (80, 891223)]