16800020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11831}}^1$

素因数の和:11911

約数の個数: 24

約数和(自身を含む): 35779968

約数和(自身を除く): 18979948

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 11831, 23662, 47324, 59155, 118310, 236620, 840001, 1680002, 3360004, 4200005, 8400010, 16800020]

約数ペア:

[(1, 16800020), (2, 8400010), (4, 4200005), (5, 3360004), (10, 1680002), (20, 840001), (71, 236620), (142, 118310), (284, 59155), (355, 47324), (710, 23662), (1420, 11831)]