21407008

素因数分解:

$2^5\times 7^1\times {\mathrm{227}}^1\times {\mathrm{421}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 48492864

約数和(自身を除く): 27085856

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 227, 421, 454, 842, 908, 1589, 1684, 1816, 2947, 3178, 3368, 3632, 5894, 6356, 6736, 7264, 11788, 12712, 13472, 23576, 25424, 47152, 50848, 94304, 95567, 191134, 382268, 668969, 764536, 1337938, 1529072, 2675876, 3058144, 5351752, 10703504, 21407008]

約数ペア:

[(1, 21407008), (2, 10703504), (4, 5351752), (7, 3058144), (8, 2675876), (14, 1529072), (16, 1337938), (28, 764536), (32, 668969), (56, 382268), (112, 191134), (224, 95567), (227, 94304), (421, 50848), (454, 47152), (842, 25424), (908, 23576), (1589, 13472), (1684, 12712), (1816, 11788), (2947, 7264), (3178, 6736), (3368, 6356), (3632, 5894)]