17945680

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2221}}^1$

素因数の和:2335

約数の個数: 40

約数和(自身を含む): 42155784

約数和(自身を除く): 24210104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2221, 4040, 4442, 8080, 8884, 11105, 17768, 22210, 35536, 44420, 88840, 177680, 224321, 448642, 897284, 1121605, 1794568, 2243210, 3589136, 4486420, 8972840, 17945680]

約数ペア:

[(1, 17945680), (2, 8972840), (4, 4486420), (5, 3589136), (8, 2243210), (10, 1794568), (16, 1121605), (20, 897284), (40, 448642), (80, 224321), (101, 177680), (202, 88840), (404, 44420), (505, 35536), (808, 22210), (1010, 17768), (1616, 11105), (2020, 8884), (2221, 8080), (4040, 4442)]