21313580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62687}}^1$

素因数の和:62713

約数の個数: 24

約数和(自身を含む): 47392128

約数和(自身を除く): 26078548

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62687, 125374, 250748, 313435, 626870, 1065679, 1253740, 2131358, 4262716, 5328395, 10656790, 21313580]

約数ペア:

[(1, 21313580), (2, 10656790), (4, 5328395), (5, 4262716), (10, 2131358), (17, 1253740), (20, 1065679), (34, 626870), (68, 313435), (85, 250748), (170, 125374), (340, 62687)]