20871770

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{48539}}^1$

素因数の和:48589

約数の個数: 16

約数和(自身を含む): 38443680

約数和(自身を除く): 17571910

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 48539, 97078, 242695, 485390, 2087177, 4174354, 10435885, 20871770]

約数ペア:

[(1, 20871770), (2, 10435885), (5, 4174354), (10, 2087177), (43, 485390), (86, 242695), (215, 97078), (430, 48539)]