20608225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{547}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 28132128

約数和(自身を除く): 7523903

約数列:

[1, 5, 11, 25, 55, 137, 275, 547, 685, 1507, 2735, 3425, 6017, 7535, 13675, 30085, 37675, 74939, 150425, 374695, 824329, 1873475, 4121645, 20608225]

約数ペア:

[(1, 20608225), (5, 4121645), (11, 1873475), (25, 824329), (55, 374695), (137, 150425), (275, 74939), (547, 37675), (685, 30085), (1507, 13675), (2735, 7535), (3425, 6017)]