78963440

素因数分解:

$2^4\times 5^1\times {\mathrm{987043}}^1$

素因数の和:987056

約数の個数: 20

約数和(自身を含む): 183590184

約数和(自身を除く): 104626744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 987043, 1974086, 3948172, 4935215, 7896344, 9870430, 15792688, 19740860, 39481720, 78963440]

約数ペア:

[(1, 78963440), (2, 39481720), (4, 19740860), (5, 15792688), (8, 9870430), (10, 7896344), (16, 4935215), (20, 3948172), (40, 1974086), (80, 987043)]