211671957

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{503}}^1\times {\mathrm{691}}^1$

素因数の和:1233

約数の個数: 32

約数和(自身を含む): 334817280

約数和(自身を除く): 123145323

約数列:

[1, 3, 7, 21, 29, 87, 203, 503, 609, 691, 1509, 2073, 3521, 4837, 10563, 14511, 14587, 20039, 43761, 60117, 102109, 140273, 306327, 347573, 420819, 1042719, 2433011, 7299033, 10079617, 30238851, 70557319, 211671957]

約数ペア:

[(1, 211671957), (3, 70557319), (7, 30238851), (21, 10079617), (29, 7299033), (87, 2433011), (203, 1042719), (503, 420819), (609, 347573), (691, 306327), (1509, 140273), (2073, 102109), (3521, 60117), (4837, 43761), (10563, 20039), (14511, 14587)]