20081680

素因数分解:

$2^4\times 5^1\times {\mathrm{283}}^1\times {\mathrm{887}}^1$

素因数の和:1183

約数の個数: 40

約数和(自身を含む): 46907712

約数和(自身を除く): 26826032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 283, 566, 887, 1132, 1415, 1774, 2264, 2830, 3548, 4435, 4528, 5660, 7096, 8870, 11320, 14192, 17740, 22640, 35480, 70960, 251021, 502042, 1004084, 1255105, 2008168, 2510210, 4016336, 5020420, 10040840, 20081680]

約数ペア:

[(1, 20081680), (2, 10040840), (4, 5020420), (5, 4016336), (8, 2510210), (10, 2008168), (16, 1255105), (20, 1004084), (40, 502042), (80, 251021), (283, 70960), (566, 35480), (887, 22640), (1132, 17740), (1415, 14192), (1774, 11320), (2264, 8870), (2830, 7096), (3548, 5660), (4435, 4528)]