21000409017

素因数分解:

$3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{5076241}}^1$

素因数の和:5076448

約数の個数: 16

約数和(自身を含む): 32163069312

約数和(自身を除く): 11162660295

約数列:

[1, 3, 7, 21, 197, 591, 1379, 4137, 5076241, 15228723, 35533687, 106601061, 1000019477, 3000058431, 7000136339, 21000409017]

約数ペア:

[(1, 21000409017), (3, 7000136339), (7, 3000058431), (21, 1000019477), (197, 106601061), (591, 35533687), (1379, 15228723), (4137, 5076241)]