28628540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33289}}^1$

素因数の和:33341

約数の個数: 24

約数和(自身を含む): 61519920

約数和(自身を除く): 32891380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 33289, 66578, 133156, 166445, 332890, 665780, 1431427, 2862854, 5725708, 7157135, 14314270, 28628540]

約数ペア:

[(1, 28628540), (2, 14314270), (4, 7157135), (5, 5725708), (10, 2862854), (20, 1431427), (43, 665780), (86, 332890), (172, 166445), (215, 133156), (430, 66578), (860, 33289)]