20744889

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 31881600

約数和(自身を除く): 11136711

約数列:

[1, 3, 11, 29, 33, 53, 87, 159, 319, 409, 583, 957, 1227, 1537, 1749, 4499, 4611, 11861, 13497, 16907, 21677, 35583, 50721, 65031, 130471, 238447, 391413, 628633, 715341, 1885899, 6914963, 20744889]

約数ペア:

[(1, 20744889), (3, 6914963), (11, 1885899), (29, 715341), (33, 628633), (53, 391413), (87, 238447), (159, 130471), (319, 65031), (409, 50721), (583, 35583), (957, 21677), (1227, 16907), (1537, 13497), (1749, 11861), (4499, 4611)]