28420790

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{673}}^1$

素因数の和:824

約数の個数: 32

約数和(自身を含む): 52992576

約数和(自身を除く): 24571786

約数列:

[1, 2, 5, 10, 41, 82, 103, 205, 206, 410, 515, 673, 1030, 1346, 3365, 4223, 6730, 8446, 21115, 27593, 42230, 55186, 69319, 137965, 138638, 275930, 346595, 693190, 2842079, 5684158, 14210395, 28420790]

約数ペア:

[(1, 28420790), (2, 14210395), (5, 5684158), (10, 2842079), (41, 693190), (82, 346595), (103, 275930), (205, 138638), (206, 137965), (410, 69319), (515, 55186), (673, 42230), (1030, 27593), (1346, 21115), (3365, 8446), (4223, 6730)]