40517320

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2063}}^1$

素因数の和:2565

約数の個数: 32

約数和(自身を含む): 91393920

約数和(自身を除く): 50876600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2063, 2455, 3928, 4126, 4910, 8252, 9820, 10315, 16504, 19640, 20630, 41260, 82520, 1012933, 2025866, 4051732, 5064665, 8103464, 10129330, 20258660, 40517320]

約数ペア:

[(1, 40517320), (2, 20258660), (4, 10129330), (5, 8103464), (8, 5064665), (10, 4051732), (20, 2025866), (40, 1012933), (491, 82520), (982, 41260), (1964, 20630), (2063, 19640), (2455, 16504), (3928, 10315), (4126, 9820), (4910, 8252)]