28065820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{10243}}^1$

素因数の和:10389

約数の個数: 24

約数和(自身を含む): 59374224

約数和(自身を除く): 31308404

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 10243, 20486, 40972, 51215, 102430, 204860, 1403291, 2806582, 5613164, 7016455, 14032910, 28065820]

約数ペア:

[(1, 28065820), (2, 14032910), (4, 7016455), (5, 5613164), (10, 2806582), (20, 1403291), (137, 204860), (274, 102430), (548, 51215), (685, 40972), (1370, 20486), (2740, 10243)]