28505140

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1811}}^1$

素因数の和:2607

約数の個数: 24

約数和(自身を含む): 59969952

約数和(自身を除く): 31464812

約数列:

[1, 2, 4, 5, 10, 20, 787, 1574, 1811, 3148, 3622, 3935, 7244, 7870, 9055, 15740, 18110, 36220, 1425257, 2850514, 5701028, 7126285, 14252570, 28505140]

約数ペア:

[(1, 28505140), (2, 14252570), (4, 7126285), (5, 5701028), (10, 2850514), (20, 1425257), (787, 36220), (1574, 18110), (1811, 15740), (3148, 9055), (3622, 7870), (3935, 7244)]