80877920

素因数分解:

$2^5\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1013}}^1$

素因数の和:1527

約数の個数: 48

約数和(自身を含む): 191646000

約数和(自身を除く): 110768080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 499, 998, 1013, 1996, 2026, 2495, 3992, 4052, 4990, 5065, 7984, 8104, 9980, 10130, 15968, 16208, 19960, 20260, 32416, 39920, 40520, 79840, 81040, 162080, 505487, 1010974, 2021948, 2527435, 4043896, 5054870, 8087792, 10109740, 16175584, 20219480, 40438960, 80877920]

約数ペア:

[(1, 80877920), (2, 40438960), (4, 20219480), (5, 16175584), (8, 10109740), (10, 8087792), (16, 5054870), (20, 4043896), (32, 2527435), (40, 2021948), (80, 1010974), (160, 505487), (499, 162080), (998, 81040), (1013, 79840), (1996, 40520), (2026, 39920), (2495, 32416), (3992, 20260), (4052, 19960), (4990, 16208), (5065, 15968), (7984, 10130), (8104, 9980)]