66720781720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{283051}}^1$

素因数の和:283216

約数の個数: 64

約数和(自身を含む): 154070864640

約数和(自身を除く): 87350082920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 83, 142, 166, 284, 332, 355, 415, 568, 664, 710, 830, 1420, 1660, 2840, 3320, 5893, 11786, 23572, 29465, 47144, 58930, 117860, 235720, 283051, 566102, 1132204, 1415255, 2264408, 2830510, 5661020, 11322040, 20096621, 23493233, 40193242, 46986466, 80386484, 93972932, 100483105, 117466165, 160772968, 187945864, 200966210, 234932330, 401932420, 469864660, 803864840, 939729320, 1668019543, 3336039086, 6672078172, 8340097715, 13344156344, 16680195430, 33360390860, 66720781720]

約数ペア:

[(1, 66720781720), (2, 33360390860), (4, 16680195430), (5, 13344156344), (8, 8340097715), (10, 6672078172), (20, 3336039086), (40, 1668019543), (71, 939729320), (83, 803864840), (142, 469864660), (166, 401932420), (284, 234932330), (332, 200966210), (355, 187945864), (415, 160772968), (568, 117466165), (664, 100483105), (710, 93972932), (830, 80386484), (1420, 46986466), (1660, 40193242), (2840, 23493233), (3320, 20096621), (5893, 11322040), (11786, 5661020), (23572, 2830510), (29465, 2264408), (47144, 1415255), (58930, 1132204), (117860, 566102), (235720, 283051)]