28804520

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2677}}^1$

素因数の和:2957

約数の個数: 32

約数和(自身を含む): 65075400

約数和(自身を除く): 36270880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2677, 2690, 5354, 5380, 10708, 10760, 13385, 21416, 26770, 53540, 107080, 720113, 1440226, 2880452, 3600565, 5760904, 7201130, 14402260, 28804520]

約数ペア:

[(1, 28804520), (2, 14402260), (4, 7201130), (5, 5760904), (8, 3600565), (10, 2880452), (20, 1440226), (40, 720113), (269, 107080), (538, 53540), (1076, 26770), (1345, 21416), (2152, 13385), (2677, 10760), (2690, 10708), (5354, 5380)]