21429820

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4679}}^1$

素因数の和:4917

約数の個数: 24

約数和(自身を含む): 45208800

約数和(自身を除く): 23778980

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 4679, 9358, 18716, 23395, 46790, 93580, 1071491, 2142982, 4285964, 5357455, 10714910, 21429820]

約数ペア:

[(1, 21429820), (2, 10714910), (4, 5357455), (5, 4285964), (10, 2142982), (20, 1071491), (229, 93580), (458, 46790), (916, 23395), (1145, 18716), (2290, 9358), (4580, 4679)]