21105535

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{2801}}^1$

素因数の和:2954

約数の個数: 16

約数和(自身を含む): 27840672

約数和(自身を除く): 6735137

約数列:

[1, 5, 11, 55, 137, 685, 1507, 2801, 7535, 14005, 30811, 154055, 383737, 1918685, 4221107, 21105535]

約数ペア:

[(1, 21105535), (5, 4221107), (11, 1918685), (55, 383737), (137, 154055), (685, 30811), (1507, 14005), (2801, 7535)]