28078820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18233}}^1$

素因数の和:18260

約数の個数: 48

約数和(自身を含む): 73519488

約数和(自身を除く): 45440668

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18233, 36466, 72932, 91165, 127631, 182330, 200563, 255262, 364660, 401126, 510524, 638155, 802252, 1002815, 1276310, 1403941, 2005630, 2552620, 2807882, 4011260, 5615764, 7019705, 14039410, 28078820]

約数ペア:

[(1, 28078820), (2, 14039410), (4, 7019705), (5, 5615764), (7, 4011260), (10, 2807882), (11, 2552620), (14, 2005630), (20, 1403941), (22, 1276310), (28, 1002815), (35, 802252), (44, 638155), (55, 510524), (70, 401126), (77, 364660), (110, 255262), (140, 200563), (154, 182330), (220, 127631), (308, 91165), (385, 72932), (770, 36466), (1540, 18233)]