664341320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{233923}}^1$

素因数の和:234005

約数の個数: 32

約数和(自身を含む): 1515827520

約数和(自身を除く): 851486200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 233923, 467846, 935692, 1169615, 1871384, 2339230, 4678460, 9356920, 16608533, 33217066, 66434132, 83042665, 132868264, 166085330, 332170660, 664341320]

約数ペア:

[(1, 664341320), (2, 332170660), (4, 166085330), (5, 132868264), (8, 83042665), (10, 66434132), (20, 33217066), (40, 16608533), (71, 9356920), (142, 4678460), (284, 2339230), (355, 1871384), (568, 1169615), (710, 935692), (1420, 467846), (2840, 233923)]