1213191

素因数分解:

$3^3\times 7^3\times {\mathrm{131}}^1$

素因数の和:161

約数の個数: 32

約数和(自身を含む): 2112000

約数和(自身を除く): 898809

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 131, 147, 189, 343, 393, 441, 917, 1029, 1179, 1323, 2751, 3087, 3537, 6419, 8253, 9261, 19257, 24759, 44933, 57771, 134799, 173313, 404397, 1213191]

約数ペア:

[(1, 1213191), (3, 404397), (7, 173313), (9, 134799), (21, 57771), (27, 44933), (49, 24759), (63, 19257), (131, 9261), (147, 8253), (189, 6419), (343, 3537), (393, 3087), (441, 2751), (917, 1323), (1029, 1179)]