221566457

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 275768064

約数和(自身を除く): 54201607

約数列:

[1, 7, 17, 61, 119, 131, 233, 427, 917, 1037, 1631, 2227, 3961, 7259, 7991, 14213, 15589, 27727, 30523, 55937, 99491, 135847, 213661, 241621, 518891, 950929, 1691347, 1861903, 3632237, 13033321, 31652351, 221566457]

約数ペア:

[(1, 221566457), (7, 31652351), (17, 13033321), (61, 3632237), (119, 1861903), (131, 1691347), (233, 950929), (427, 518891), (917, 241621), (1037, 213661), (1631, 135847), (2227, 99491), (3961, 55937), (7259, 30523), (7991, 27727), (14213, 15589)]