21922747

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 28194480

約数和(自身を除く): 6271733

約数列:

[1, 7, 11, 49, 77, 89, 457, 539, 623, 979, 3199, 4361, 5027, 6853, 22393, 35189, 40673, 47971, 246323, 284711, 447403, 1992977, 3131821, 21922747]

約数ペア:

[(1, 21922747), (7, 3131821), (11, 1992977), (49, 447403), (77, 284711), (89, 246323), (457, 47971), (539, 40673), (623, 35189), (979, 22393), (3199, 6853), (4361, 5027)]