21780744

素因数分解:

$2^3\times 3^1\times {\mathrm{139}}^1\times {\mathrm{6529}}^1$

素因数の和:6677

約数の個数: 32

約数和(自身を含む): 54852000

約数和(自身を除く): 33071256

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 139, 278, 417, 556, 834, 1112, 1668, 3336, 6529, 13058, 19587, 26116, 39174, 52232, 78348, 156696, 907531, 1815062, 2722593, 3630124, 5445186, 7260248, 10890372, 21780744]

約数ペア:

[(1, 21780744), (2, 10890372), (3, 7260248), (4, 5445186), (6, 3630124), (8, 2722593), (12, 1815062), (24, 907531), (139, 156696), (278, 78348), (417, 52232), (556, 39174), (834, 26116), (1112, 19587), (1668, 13058), (3336, 6529)]