221808880

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{6779}}^1$

素因数の和:7201

約数の個数: 40

約数和(自身を含む): 517042800

約数和(自身を除く): 295233920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6544, 6779, 8180, 13558, 16360, 27116, 32720, 33895, 54232, 67790, 108464, 135580, 271160, 542320, 2772611, 5545222, 11090444, 13863055, 22180888, 27726110, 44361776, 55452220, 110904440, 221808880]

約数ペア:

[(1, 221808880), (2, 110904440), (4, 55452220), (5, 44361776), (8, 27726110), (10, 22180888), (16, 13863055), (20, 11090444), (40, 5545222), (80, 2772611), (409, 542320), (818, 271160), (1636, 135580), (2045, 108464), (3272, 67790), (4090, 54232), (6544, 33895), (6779, 32720), (8180, 27116), (13558, 16360)]