28788380

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5351}}^1$

素因数の和:5629

約数の個数: 24

約数和(自身を含む): 60691680

約数和(自身を除く): 31903300

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5351, 5380, 10702, 21404, 26755, 53510, 107020, 1439419, 2878838, 5757676, 7197095, 14394190, 28788380]

約数ペア:

[(1, 28788380), (2, 14394190), (4, 7197095), (5, 5757676), (10, 2878838), (20, 1439419), (269, 107020), (538, 53510), (1076, 26755), (1345, 21404), (2690, 10702), (5351, 5380)]