201981957

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 285880320

約数和(自身を除く): 83898363

約数列:

[1, 3, 31, 59, 93, 131, 177, 281, 393, 843, 1829, 4061, 5487, 7729, 8711, 12183, 16579, 23187, 26133, 36811, 49737, 110433, 239599, 513949, 718797, 1141141, 1541847, 2171849, 3423423, 6515547, 67327319, 201981957]

約数ペア:

[(1, 201981957), (3, 67327319), (31, 6515547), (59, 3423423), (93, 2171849), (131, 1541847), (177, 1141141), (281, 718797), (393, 513949), (843, 239599), (1829, 110433), (4061, 49737), (5487, 36811), (7729, 26133), (8711, 23187), (12183, 16579)]