20658701

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{683}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 24624000

約数和(自身を除く): 3965299

約数列:

[1, 7, 29, 149, 203, 683, 1043, 4321, 4781, 19807, 30247, 101767, 138649, 712369, 2951243, 20658701]

約数ペア:

[(1, 20658701), (7, 2951243), (29, 712369), (149, 138649), (203, 101767), (683, 30247), (1043, 19807), (4321, 4781)]