21338558

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{1609}}^1$

素因数の和:1979

約数の個数: 16

約数和(自身を含む): 33810000

約数和(自身を除く): 12471442

約数列:

[1, 2, 19, 38, 349, 698, 1609, 3218, 6631, 13262, 30571, 61142, 561541, 1123082, 10669279, 21338558]

約数ペア:

[(1, 21338558), (2, 10669279), (19, 1123082), (38, 561541), (349, 61142), (698, 30571), (1609, 13262), (3218, 6631)]