31200309

素因数分解:

$3^4\times 7^3\times {\mathrm{1123}}^1$

素因数の和:1156

約数の個数: 40

約数和(自身を含む): 54401600

約数和(自身を除く): 23201291

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 1029, 1123, 1323, 3087, 3369, 3969, 7861, 9261, 10107, 23583, 27783, 30321, 55027, 70749, 90963, 165081, 212247, 385189, 495243, 636741, 1155567, 1485729, 3466701, 4457187, 10400103, 31200309]

約数ペア:

[(1, 31200309), (3, 10400103), (7, 4457187), (9, 3466701), (21, 1485729), (27, 1155567), (49, 636741), (63, 495243), (81, 385189), (147, 212247), (189, 165081), (343, 90963), (441, 70749), (567, 55027), (1029, 30321), (1123, 27783), (1323, 23583), (3087, 10107), (3369, 9261), (3969, 7861)]