28220985

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2539}}^1$

素因数の和:2582

約数の個数: 48

約数和(自身を含む): 55473600

約数和(自身を除く): 27252615

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 2223, 2539, 3705, 7617, 11115, 12695, 22851, 33007, 38085, 48241, 99021, 114255, 144723, 165035, 241205, 297063, 434169, 495105, 627133, 723615, 1485315, 1881399, 2170845, 3135665, 5644197, 9406995, 28220985]

約数ペア:

[(1, 28220985), (3, 9406995), (5, 5644197), (9, 3135665), (13, 2170845), (15, 1881399), (19, 1485315), (39, 723615), (45, 627133), (57, 495105), (65, 434169), (95, 297063), (117, 241205), (171, 165035), (195, 144723), (247, 114255), (285, 99021), (585, 48241), (741, 38085), (855, 33007), (1235, 22851), (2223, 12695), (2539, 11115), (3705, 7617)]