20399445

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1$

素因数の和:288

約数の個数: 80

約数和(自身を含む): 42166080

約数和(自身を除く): 21766635

約数列:

[1, 3, 5, 9, 11, 15, 19, 27, 33, 45, 55, 57, 81, 95, 99, 135, 165, 171, 209, 241, 285, 297, 405, 495, 513, 627, 723, 855, 891, 1045, 1205, 1485, 1539, 1881, 2169, 2565, 2651, 3135, 3615, 4455, 4579, 5643, 6507, 7695, 7953, 9405, 10845, 13255, 13737, 16929, 19521, 22895, 23859, 28215, 32535, 39765, 41211, 50369, 68685, 71577, 84645, 97605, 119295, 123633, 151107, 206055, 214731, 251845, 357885, 370899, 453321, 618165, 755535, 1073655, 1359963, 1854495, 2266605, 4079889, 6799815, 20399445]

約数ペア:

[(1, 20399445), (3, 6799815), (5, 4079889), (9, 2266605), (11, 1854495), (15, 1359963), (19, 1073655), (27, 755535), (33, 618165), (45, 453321), (55, 370899), (57, 357885), (81, 251845), (95, 214731), (99, 206055), (135, 151107), (165, 123633), (171, 119295), (209, 97605), (241, 84645), (285, 71577), (297, 68685), (405, 50369), (495, 41211), (513, 39765), (627, 32535), (723, 28215), (855, 23859), (891, 22895), (1045, 19521), (1205, 16929), (1485, 13737), (1539, 13255), (1881, 10845), (2169, 9405), (2565, 7953), (2651, 7695), (3135, 6507), (3615, 5643), (4455, 4579)]