20248965

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2153}}^1$

素因数の和:2194

約数の個数: 48

約数和(自身を含む): 40322880

約数和(自身を除く): 20073915

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, 2153, 3135, 6459, 9405, 10765, 19377, 23683, 32295, 40907, 71049, 96885, 118415, 122721, 204535, 213147, 355245, 368163, 449977, 613605, 1065735, 1349931, 1840815, 2249885, 4049793, 6749655, 20248965]

約数ペア:

[(1, 20248965), (3, 6749655), (5, 4049793), (9, 2249885), (11, 1840815), (15, 1349931), (19, 1065735), (33, 613605), (45, 449977), (55, 368163), (57, 355245), (95, 213147), (99, 204535), (165, 122721), (171, 118415), (209, 96885), (285, 71049), (495, 40907), (627, 32295), (855, 23683), (1045, 19377), (1881, 10765), (2153, 9405), (3135, 6459)]