20456660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6353}}^1$

素因数の和:6392

約数の個数: 48

約数和(自身を含む): 51238656

約数和(自身を除く): 30781996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6353, 12706, 25412, 31765, 44471, 63530, 88942, 127060, 146119, 177884, 222355, 292238, 444710, 584476, 730595, 889420, 1022833, 1461190, 2045666, 2922380, 4091332, 5114165, 10228330, 20456660]

約数ペア:

[(1, 20456660), (2, 10228330), (4, 5114165), (5, 4091332), (7, 2922380), (10, 2045666), (14, 1461190), (20, 1022833), (23, 889420), (28, 730595), (35, 584476), (46, 444710), (70, 292238), (92, 222355), (115, 177884), (140, 146119), (161, 127060), (230, 88942), (322, 63530), (460, 44471), (644, 31765), (805, 25412), (1610, 12706), (3220, 6353)]