21581638

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{953}}^1$

素因数の和:1048

約数の個数: 24

約数和(自身を含む): 35614728

約数和(自身を除く): 14033090

約数列:

[1, 2, 13, 26, 67, 134, 169, 338, 871, 953, 1742, 1906, 11323, 12389, 22646, 24778, 63851, 127702, 161057, 322114, 830063, 1660126, 10790819, 21581638]

約数ペア:

[(1, 21581638), (2, 10790819), (13, 1660126), (26, 830063), (67, 322114), (134, 161057), (169, 127702), (338, 63851), (871, 24778), (953, 22646), (1742, 12389), (1906, 11323)]