28220020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10771}}^1$

素因数の和:10911

約数の個数: 24

約数和(自身を含む): 59719968

約数和(自身を除く): 31499948

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 10771, 21542, 43084, 53855, 107710, 215420, 1411001, 2822002, 5644004, 7055005, 14110010, 28220020]

約数ペア:

[(1, 28220020), (2, 14110010), (4, 7055005), (5, 5644004), (10, 2822002), (20, 1411001), (131, 215420), (262, 107710), (524, 53855), (655, 43084), (1310, 21542), (2620, 10771)]