28008080

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4931}}^1$

素因数の和:5015

約数の個数: 40

約数和(自身を含む): 66049344

約数和(自身を除く): 38041264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4931, 5680, 9862, 19724, 24655, 39448, 49310, 78896, 98620, 197240, 350101, 394480, 700202, 1400404, 1750505, 2800808, 3501010, 5601616, 7002020, 14004040, 28008080]

約数ペア:

[(1, 28008080), (2, 14004040), (4, 7002020), (5, 5601616), (8, 3501010), (10, 2800808), (16, 1750505), (20, 1400404), (40, 700202), (71, 394480), (80, 350101), (142, 197240), (284, 98620), (355, 78896), (568, 49310), (710, 39448), (1136, 24655), (1420, 19724), (2840, 9862), (4931, 5680)]