28507940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18043}}^1$

素因数の和:18131

約数の個数: 24

約数和(自身を含む): 60627840

約数和(自身を除く): 32119900

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 18043, 36086, 72172, 90215, 180430, 360860, 1425397, 2850794, 5701588, 7126985, 14253970, 28507940]

約数ペア:

[(1, 28507940), (2, 14253970), (4, 7126985), (5, 5701588), (10, 2850794), (20, 1425397), (79, 360860), (158, 180430), (316, 90215), (395, 72172), (790, 36086), (1580, 18043)]