21354164

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1019}}^1$

素因数の和:1080

約数の個数: 36

約数和(自身を含む): 41811840

約数和(自身を除く): 20457676

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 1019, 1612, 2038, 4076, 5239, 10478, 13247, 20956, 26494, 31589, 52988, 63178, 126356, 172211, 344422, 410657, 688844, 821314, 1642628, 5338541, 10677082, 21354164]

約数ペア:

[(1, 21354164), (2, 10677082), (4, 5338541), (13, 1642628), (26, 821314), (31, 688844), (52, 410657), (62, 344422), (124, 172211), (169, 126356), (338, 63178), (403, 52988), (676, 31589), (806, 26494), (1019, 20956), (1612, 13247), (2038, 10478), (4076, 5239)]