20736429

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51971}}^1$

素因数の和:52000

約数の個数: 16

約数和(自身を含む): 33262080

約数和(自身を除く): 12525651

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51971, 155913, 363797, 987449, 1091391, 2962347, 6912143, 20736429]

約数ペア:

[(1, 20736429), (3, 6912143), (7, 2962347), (19, 1091391), (21, 987449), (57, 363797), (133, 155913), (399, 51971)]