18857951

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{47}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 23261184

約数和(自身を除く): 4403233

約数列:

[1, 7, 31, 43, 47, 217, 301, 329, 1333, 1457, 1849, 2021, 9331, 10199, 12943, 14147, 57319, 62651, 86903, 401233, 438557, 608321, 2693993, 18857951]

約数ペア:

[(1, 18857951), (7, 2693993), (31, 608321), (43, 438557), (47, 401233), (217, 86903), (301, 62651), (329, 57319), (1333, 14147), (1457, 12943), (1849, 10199), (2021, 9331)]