20279990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{69931}}^1$

素因数の和:69967

約数の個数: 16

約数和(自身を含む): 37763280

約数和(自身を除く): 17483290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 69931, 139862, 349655, 699310, 2027999, 4055998, 10139995, 20279990]

約数ペア:

[(1, 20279990), (2, 10139995), (5, 4055998), (10, 2027999), (29, 699310), (58, 349655), (145, 139862), (290, 69931)]