28647213

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 47825280

約数和(自身を除く): 19178067

約数列:

[1, 3, 7, 21, 23, 37, 49, 69, 111, 147, 161, 229, 259, 483, 687, 777, 851, 1127, 1603, 1813, 2553, 3381, 4809, 5267, 5439, 5957, 8473, 11221, 15801, 17871, 25419, 33663, 36869, 41699, 59311, 110607, 125097, 177933, 194879, 258083, 415177, 584637, 774249, 1245531, 1364153, 4092459, 9549071, 28647213]

約数ペア:

[(1, 28647213), (3, 9549071), (7, 4092459), (21, 1364153), (23, 1245531), (37, 774249), (49, 584637), (69, 415177), (111, 258083), (147, 194879), (161, 177933), (229, 125097), (259, 110607), (483, 59311), (687, 41699), (777, 36869), (851, 33663), (1127, 25419), (1603, 17871), (1813, 15801), (2553, 11221), (3381, 8473), (4809, 5957), (5267, 5439)]