21605636

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1031}}^1$

素因数の和:1092

約数の個数: 36

約数和(自身を含む): 42303744

約数和(自身を除く): 20698108

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 1031, 1612, 2062, 4124, 5239, 10478, 13403, 20956, 26806, 31961, 53612, 63922, 127844, 174239, 348478, 415493, 696956, 830986, 1661972, 5401409, 10802818, 21605636]

約数ペア:

[(1, 21605636), (2, 10802818), (4, 5401409), (13, 1661972), (26, 830986), (31, 696956), (52, 415493), (62, 348478), (124, 174239), (169, 127844), (338, 63922), (403, 53612), (676, 31961), (806, 26806), (1031, 20956), (1612, 13403), (2062, 10478), (4124, 5239)]