21852190

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 18467810

約数列:

[1, 2, 5, 10, 79, 139, 158, 199, 278, 395, 398, 695, 790, 995, 1390, 1990, 10981, 15721, 21962, 27661, 31442, 54905, 55322, 78605, 109810, 138305, 157210, 276610, 2185219, 4370438, 10926095, 21852190]

約数ペア:

[(1, 21852190), (2, 10926095), (5, 4370438), (10, 2185219), (79, 276610), (139, 157210), (158, 138305), (199, 109810), (278, 78605), (395, 55322), (398, 54905), (695, 31442), (790, 27661), (995, 21962), (1390, 15721), (1990, 10981)]