21392195

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1861}}^1$

素因数の和:1907

約数の個数: 24

約数和(自身を含む): 29717520

約数和(自身を除く): 8325325

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1861, 2299, 9305, 11495, 20471, 35359, 102355, 176795, 225181, 388949, 1125905, 1944745, 4278439, 21392195]

約数ペア:

[(1, 21392195), (5, 4278439), (11, 1944745), (19, 1125905), (55, 388949), (95, 225181), (121, 176795), (209, 102355), (605, 35359), (1045, 20471), (1861, 11495), (2299, 9305)]