21116053

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:185

約数の個数: 24

約数和(自身を含む): 25865664

約数和(自身を除く): 4749611

約数列:

[1, 7, 31, 43, 73, 217, 301, 511, 961, 1333, 2263, 3139, 6727, 9331, 15841, 21973, 41323, 70153, 97309, 289261, 491071, 681163, 3016579, 21116053]

約数ペア:

[(1, 21116053), (7, 3016579), (31, 681163), (43, 491071), (73, 289261), (217, 97309), (301, 70153), (511, 41323), (961, 21973), (1333, 15841), (2263, 9331), (3139, 6727)]