21267116

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 20880724

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 79, 124, 158, 167, 316, 334, 403, 668, 806, 1027, 1612, 2054, 2171, 2449, 4108, 4342, 4898, 5177, 8684, 9796, 10354, 13193, 20708, 26386, 31837, 52772, 63674, 67301, 127348, 134602, 171509, 269204, 343018, 408983, 686036, 817966, 1635932, 5316779, 10633558, 21267116]

約数ペア:

[(1, 21267116), (2, 10633558), (4, 5316779), (13, 1635932), (26, 817966), (31, 686036), (52, 408983), (62, 343018), (79, 269204), (124, 171509), (158, 134602), (167, 127348), (316, 67301), (334, 63674), (403, 52772), (668, 31837), (806, 26386), (1027, 20708), (1612, 13193), (2054, 10354), (2171, 9796), (2449, 8684), (4108, 5177), (4342, 4898)]