221781147

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{1109}}^1$

素因数の和:1315

約数の個数: 32

約数和(自身を含む): 345254400

約数和(自身を除く): 123473253

約数列:

[1, 3, 7, 21, 89, 107, 267, 321, 623, 749, 1109, 1869, 2247, 3327, 7763, 9523, 23289, 28569, 66661, 98701, 118663, 199983, 296103, 355989, 690907, 830641, 2072721, 2491923, 10561007, 31683021, 73927049, 221781147]

約数ペア:

[(1, 221781147), (3, 73927049), (7, 31683021), (21, 10561007), (89, 2491923), (107, 2072721), (267, 830641), (321, 690907), (623, 355989), (749, 296103), (1109, 199983), (1869, 118663), (2247, 98701), (3327, 66661), (7763, 28569), (9523, 23289)]