20004990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{4091}}^1$

素因数の和:4264

約数の個数: 32

約数和(自身を含む): 48318336

約数和(自身を除く): 28313346

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445, 4091, 4890, 8182, 12273, 20455, 24546, 40910, 61365, 122730, 666833, 1333666, 2000499, 3334165, 4000998, 6668330, 10002495, 20004990]

約数ペア:

[(1, 20004990), (2, 10002495), (3, 6668330), (5, 4000998), (6, 3334165), (10, 2000499), (15, 1333666), (30, 666833), (163, 122730), (326, 61365), (489, 40910), (815, 24546), (978, 20455), (1630, 12273), (2445, 8182), (4091, 4890)]