640620766

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{81359}}^1$

素因数の和:81519

約数の個数: 16

約数和(自身を含む): 999751680

約数和(自身を除く): 359130914

約数列:

[1, 2, 31, 62, 127, 254, 3937, 7874, 81359, 162718, 2522129, 5044258, 10332593, 20665186, 320310383, 640620766]

約数ペア:

[(1, 640620766), (2, 320310383), (31, 20665186), (62, 10332593), (127, 5044258), (254, 2522129), (3937, 162718), (7874, 81359)]