21244328

素因数分解:

$2^3\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1087}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 45696000

約数和(自身を除く): 24451672

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 349, 698, 1087, 1396, 2174, 2443, 2792, 4348, 4886, 7609, 8696, 9772, 15218, 19544, 30436, 60872, 379363, 758726, 1517452, 2655541, 3034904, 5311082, 10622164, 21244328]

約数ペア:

[(1, 21244328), (2, 10622164), (4, 5311082), (7, 3034904), (8, 2655541), (14, 1517452), (28, 758726), (56, 379363), (349, 60872), (698, 30436), (1087, 19544), (1396, 15218), (2174, 9772), (2443, 8696), (2792, 7609), (4348, 4886)]