221346293

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 269383680

約数和(自身を除く): 48037387

約数列:

[1, 7, 31, 73, 89, 157, 217, 511, 623, 1099, 2263, 2759, 4867, 6497, 11461, 13973, 15841, 19313, 34069, 45479, 80227, 97811, 201407, 355291, 433163, 1020029, 1409849, 2487037, 3032141, 7140203, 31620899, 221346293]

約数ペア:

[(1, 221346293), (7, 31620899), (31, 7140203), (73, 3032141), (89, 2487037), (157, 1409849), (217, 1020029), (511, 433163), (623, 355291), (1099, 201407), (2263, 97811), (2759, 80227), (4867, 45479), (6497, 34069), (11461, 19313), (13973, 15841)]