201212221

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 252626688

約数和(自身を除く): 51414467

約数列:

[1, 7, 17, 53, 61, 119, 371, 427, 523, 901, 1037, 3233, 3661, 6307, 7259, 8891, 22631, 27719, 31903, 54961, 62237, 194033, 223321, 384727, 471223, 542351, 1690859, 3298561, 3796457, 11836013, 28744603, 201212221]

約数ペア:

[(1, 201212221), (7, 28744603), (17, 11836013), (53, 3796457), (61, 3298561), (119, 1690859), (371, 542351), (427, 471223), (523, 384727), (901, 223321), (1037, 194033), (3233, 62237), (3661, 54961), (6307, 31903), (7259, 27719), (8891, 22631)]