21116290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1279}}^1$

素因数の和:1426

約数の個数: 32

約数和(自身を含む): 41287680

約数和(自身を除く): 20171390

約数列:

[1, 2, 5, 10, 13, 26, 65, 127, 130, 254, 635, 1270, 1279, 1651, 2558, 3302, 6395, 8255, 12790, 16510, 16627, 33254, 83135, 162433, 166270, 324866, 812165, 1624330, 2111629, 4223258, 10558145, 21116290]

約数ペア:

[(1, 21116290), (2, 10558145), (5, 4223258), (10, 2111629), (13, 1624330), (26, 812165), (65, 324866), (127, 166270), (130, 162433), (254, 83135), (635, 33254), (1270, 16627), (1279, 16510), (1651, 12790), (2558, 8255), (3302, 6395)]