2018405781

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{143669}}^1$

素因数の和:143905

約数の個数: 24

約数和(自身を含む): 3346936320

約数和(自身を除く): 1328530539

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2007, 4683, 14049, 143669, 431007, 1005683, 1293021, 3017049, 9051147, 32038187, 96114561, 224267309, 288343683, 672801927, 2018405781]

約数ペア:

[(1, 2018405781), (3, 672801927), (7, 288343683), (9, 224267309), (21, 96114561), (63, 32038187), (223, 9051147), (669, 3017049), (1561, 1293021), (2007, 1005683), (4683, 431007), (14049, 143669)]