20726055

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3463}}^1$

素因数の和:3500

約数の個数: 48

約数和(自身を含む): 43230720

約数和(自身を除く): 22504665

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3463, 5985, 10389, 17315, 24241, 31167, 51945, 65797, 72723, 121205, 155835, 197391, 218169, 328985, 363615, 460579, 592173, 986955, 1090845, 1381737, 2302895, 2960865, 4145211, 6908685, 20726055]

約数ペア:

[(1, 20726055), (3, 6908685), (5, 4145211), (7, 2960865), (9, 2302895), (15, 1381737), (19, 1090845), (21, 986955), (35, 592173), (45, 460579), (57, 363615), (63, 328985), (95, 218169), (105, 197391), (133, 155835), (171, 121205), (285, 72723), (315, 65797), (399, 51945), (665, 31167), (855, 24241), (1197, 17315), (1995, 10389), (3463, 5985)]