21518252

素因数分解:

$2^2\times 7^2\times {\mathrm{101}}^1\times {\mathrm{1087}}^1$

素因数の和:1206

約数の個数: 36

約数和(自身を含む): 44279424

約数和(自身を除く): 22761172

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 101, 196, 202, 404, 707, 1087, 1414, 2174, 2828, 4348, 4949, 7609, 9898, 15218, 19796, 30436, 53263, 106526, 109787, 213052, 219574, 439148, 768509, 1537018, 3074036, 5379563, 10759126, 21518252]

約数ペア:

[(1, 21518252), (2, 10759126), (4, 5379563), (7, 3074036), (14, 1537018), (28, 768509), (49, 439148), (98, 219574), (101, 213052), (196, 109787), (202, 106526), (404, 53263), (707, 30436), (1087, 19796), (1414, 15218), (2174, 9898), (2828, 7609), (4348, 4949)]