21619970

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:554

約数の個数: 32

約数和(自身を含む): 40220928

約数和(自身を除く): 18600958

約数列:

[1, 2, 5, 10, 43, 86, 137, 215, 274, 367, 430, 685, 734, 1370, 1835, 3670, 5891, 11782, 15781, 29455, 31562, 50279, 58910, 78905, 100558, 157810, 251395, 502790, 2161997, 4323994, 10809985, 21619970]

約数ペア:

[(1, 21619970), (2, 10809985), (5, 4323994), (10, 2161997), (43, 502790), (86, 251395), (137, 157810), (215, 100558), (274, 78905), (367, 58910), (430, 50279), (685, 31562), (734, 29455), (1370, 15781), (1835, 11782), (3670, 5891)]