28912120

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2687}}^1$

素因数の和:2967

約数の個数: 32

約数和(自身を含む): 65318400

約数和(自身を除く): 36406280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2687, 2690, 5374, 5380, 10748, 10760, 13435, 21496, 26870, 53740, 107480, 722803, 1445606, 2891212, 3614015, 5782424, 7228030, 14456060, 28912120]

約数ペア:

[(1, 28912120), (2, 14456060), (4, 7228030), (5, 5782424), (8, 3614015), (10, 2891212), (20, 1445606), (40, 722803), (269, 107480), (538, 53740), (1076, 26870), (1345, 21496), (2152, 13435), (2687, 10760), (2690, 10748), (5374, 5380)]