21874653

素因数分解:

$3^2\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 32313528

約数和(自身を除く): 10438875

約数列:

[1, 3, 9, 113, 137, 157, 339, 411, 471, 1017, 1233, 1413, 15481, 17741, 21509, 46443, 53223, 64527, 139329, 159669, 193581, 2430517, 7291551, 21874653]

約数ペア:

[(1, 21874653), (3, 7291551), (9, 2430517), (113, 193581), (137, 159669), (157, 139329), (339, 64527), (411, 53223), (471, 46443), (1017, 21509), (1233, 17741), (1413, 15481)]