21998795

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6907}}^1$

素因数の和:6939

約数の個数: 24

約数和(自身を含む): 33075504

約数和(自身を除く): 11076709

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6907, 34535, 48349, 89791, 241745, 338443, 448955, 628537, 1692215, 3142685, 4399759, 21998795]

約数ペア:

[(1, 21998795), (5, 4399759), (7, 3142685), (13, 1692215), (35, 628537), (49, 448955), (65, 338443), (91, 241745), (245, 89791), (455, 48349), (637, 34535), (3185, 6907)]