21246770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124981}}^1$

素因数の和:125005

約数の個数: 16

約数和(自身を含む): 40494168

約数和(自身を除く): 19247398

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124981, 249962, 624905, 1249810, 2124677, 4249354, 10623385, 21246770]

約数ペア:

[(1, 21246770), (2, 10623385), (5, 4249354), (10, 2124677), (17, 1249810), (34, 624905), (85, 249962), (170, 124981)]