420291221

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1\times {\mathrm{6779}}^1$

素因数の和:7324

約数の個数: 16

約数和(自身を含む): 509639040

約数和(自身を除く): 89347819

約数列:

[1, 7, 17, 119, 521, 3647, 6779, 8857, 47453, 61999, 115243, 806701, 3531859, 24723013, 60041603, 420291221]

約数ペア:

[(1, 420291221), (7, 60041603), (17, 24723013), (119, 3531859), (521, 806701), (3647, 115243), (6779, 61999), (8857, 47453)]