21687302

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:645

約数の個数: 48

約数和(自身を含む): 42230160

約数和(自身を除く): 20542858

約数列:

[1, 2, 7, 13, 14, 26, 29, 49, 58, 91, 98, 182, 203, 377, 406, 587, 637, 754, 1174, 1274, 1421, 2639, 2842, 4109, 5278, 7631, 8218, 15262, 17023, 18473, 28763, 34046, 36946, 53417, 57526, 106834, 119161, 221299, 238322, 373919, 442598, 747838, 834127, 1549093, 1668254, 3098186, 10843651, 21687302]

約数ペア:

[(1, 21687302), (2, 10843651), (7, 3098186), (13, 1668254), (14, 1549093), (26, 834127), (29, 747838), (49, 442598), (58, 373919), (91, 238322), (98, 221299), (182, 119161), (203, 106834), (377, 57526), (406, 53417), (587, 36946), (637, 34046), (754, 28763), (1174, 18473), (1274, 17023), (1421, 15262), (2639, 8218), (2842, 7631), (4109, 5278)]