13668920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4813}}^1$

素因数の和:4895

約数の個数: 32

約数和(自身を含む): 31194720

約数和(自身を除く): 17525800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4813, 9626, 19252, 24065, 38504, 48130, 96260, 192520, 341723, 683446, 1366892, 1708615, 2733784, 3417230, 6834460, 13668920]

約数ペア:

[(1, 13668920), (2, 6834460), (4, 3417230), (5, 2733784), (8, 1708615), (10, 1366892), (20, 683446), (40, 341723), (71, 192520), (142, 96260), (284, 48130), (355, 38504), (568, 24065), (710, 19252), (1420, 9626), (2840, 4813)]