20835790

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:708

約数の個数: 32

約数和(自身を含む): 38918880

約数和(自身を除く): 18083090

約数列:

[1, 2, 5, 10, 41, 82, 89, 178, 205, 410, 445, 571, 890, 1142, 2855, 3649, 5710, 7298, 18245, 23411, 36490, 46822, 50819, 101638, 117055, 234110, 254095, 508190, 2083579, 4167158, 10417895, 20835790]

約数ペア:

[(1, 20835790), (2, 10417895), (5, 4167158), (10, 2083579), (41, 508190), (82, 254095), (89, 234110), (178, 117055), (205, 101638), (410, 50819), (445, 46822), (571, 36490), (890, 23411), (1142, 18245), (2855, 7298), (3649, 5710)]