28293880

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2137}}^1$

素因数の和:2479

約数の個数: 32

約数和(自身を含む): 63883440

約数和(自身を除く): 35589560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2137, 2648, 3310, 4274, 6620, 8548, 10685, 13240, 17096, 21370, 42740, 85480, 707347, 1414694, 2829388, 3536735, 5658776, 7073470, 14146940, 28293880]

約数ペア:

[(1, 28293880), (2, 14146940), (4, 7073470), (5, 5658776), (8, 3536735), (10, 2829388), (20, 1414694), (40, 707347), (331, 85480), (662, 42740), (1324, 21370), (1655, 17096), (2137, 13240), (2648, 10685), (3310, 8548), (4274, 6620)]