20507907

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3181}}^1$

素因数の和:3498

約数の個数: 16

約数和(自身を含む): 31361792

約数和(自身を除く): 10853885

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3181, 6447, 9543, 22267, 66801, 976567, 2929701, 6835969, 20507907]

約数ペア:

[(1, 20507907), (3, 6835969), (7, 2929701), (21, 976567), (307, 66801), (921, 22267), (2149, 9543), (3181, 6447)]