20154915

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2143}}^1$

素因数の和:2184

約数の個数: 48

約数和(自身を含む): 40135680

約数和(自身を除く): 19980765

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2143, 3135, 6429, 9405, 10715, 19287, 23573, 32145, 40717, 70719, 96435, 117865, 122151, 203585, 212157, 353595, 366453, 447887, 610755, 1060785, 1343661, 1832265, 2239435, 4030983, 6718305, 20154915]

約数ペア:

[(1, 20154915), (3, 6718305), (5, 4030983), (9, 2239435), (11, 1832265), (15, 1343661), (19, 1060785), (33, 610755), (45, 447887), (55, 366453), (57, 353595), (95, 212157), (99, 203585), (165, 122151), (171, 117865), (209, 96435), (285, 70719), (495, 40717), (627, 32145), (855, 23573), (1045, 19287), (1881, 10715), (2143, 9405), (3135, 6429)]