221508890

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{1409}}^1$

素因数の和:1694

約数の個数: 32

約数和(自身を含む): 406080000

約数和(自身を除く): 184571110

約数列:

[1, 2, 5, 10, 79, 158, 199, 395, 398, 790, 995, 1409, 1990, 2818, 7045, 14090, 15721, 31442, 78605, 111311, 157210, 222622, 280391, 556555, 560782, 1113110, 1401955, 2803910, 22150889, 44301778, 110754445, 221508890]

約数ペア:

[(1, 221508890), (2, 110754445), (5, 44301778), (10, 22150889), (79, 2803910), (158, 1401955), (199, 1113110), (395, 560782), (398, 556555), (790, 280391), (995, 222622), (1409, 157210), (1990, 111311), (2818, 78605), (7045, 31442), (14090, 15721)]