28535380

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3389}}^1$

素因数の和:3819

約数の個数: 24

約数和(自身を含む): 60084360

約数和(自身を除く): 31548980

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 3389, 4210, 6778, 8420, 13556, 16945, 33890, 67780, 1426769, 2853538, 5707076, 7133845, 14267690, 28535380]

約数ペア:

[(1, 28535380), (2, 14267690), (4, 7133845), (5, 5707076), (10, 2853538), (20, 1426769), (421, 67780), (842, 33890), (1684, 16945), (2105, 13556), (3389, 8420), (4210, 6778)]