21107807

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{461}}^1$

素因数の和:710

約数の個数: 16

約数和(自身を含む): 25073664

約数和(自身を除く): 3965857

約数列:

[1, 7, 31, 211, 217, 461, 1477, 3227, 6541, 14291, 45787, 97271, 100037, 680897, 3015401, 21107807]

約数ペア:

[(1, 21107807), (7, 3015401), (31, 680897), (211, 100037), (217, 97271), (461, 45787), (1477, 14291), (3227, 6541)]