20431138

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 19888862

約数列:

[1, 2, 7, 13, 14, 26, 29, 49, 58, 79, 91, 98, 158, 182, 203, 343, 377, 406, 553, 637, 686, 754, 1027, 1106, 1274, 1421, 2054, 2291, 2639, 2842, 3871, 4459, 4582, 5278, 7189, 7742, 8918, 9947, 14378, 16037, 18473, 19894, 27097, 29783, 32074, 36946, 50323, 54194, 59566, 100646, 112259, 129311, 208481, 224518, 258622, 352261, 416962, 704522, 785813, 1459367, 1571626, 2918734, 10215569, 20431138]

約数ペア:

[(1, 20431138), (2, 10215569), (7, 2918734), (13, 1571626), (14, 1459367), (26, 785813), (29, 704522), (49, 416962), (58, 352261), (79, 258622), (91, 224518), (98, 208481), (158, 129311), (182, 112259), (203, 100646), (343, 59566), (377, 54194), (406, 50323), (553, 36946), (637, 32074), (686, 29783), (754, 27097), (1027, 19894), (1106, 18473), (1274, 16037), (1421, 14378), (2054, 9947), (2291, 8918), (2639, 7742), (2842, 7189), (3871, 5278), (4459, 4582)]