20563460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23911}}^1$

素因数の和:23963

約数の個数: 24

約数和(自身を含む): 44189376

約数和(自身を除く): 23625916

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23911, 47822, 95644, 119555, 239110, 478220, 1028173, 2056346, 4112692, 5140865, 10281730, 20563460]

約数ペア:

[(1, 20563460), (2, 10281730), (4, 5140865), (5, 4112692), (10, 2056346), (20, 1028173), (43, 478220), (86, 239110), (172, 119555), (215, 95644), (430, 47822), (860, 23911)]