66281320

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{4831}}^1$

素因数の和:4863

約数の個数: 64

約数和(自身を含む): 173952000

約数和(自身を除く): 107670680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2744, 3430, 4831, 6860, 9662, 13720, 19324, 24155, 33817, 38648, 48310, 67634, 96620, 135268, 169085, 193240, 236719, 270536, 338170, 473438, 676340, 946876, 1183595, 1352680, 1657033, 1893752, 2367190, 3314066, 4734380, 6628132, 8285165, 9468760, 13256264, 16570330, 33140660, 66281320]

約数ペア:

[(1, 66281320), (2, 33140660), (4, 16570330), (5, 13256264), (7, 9468760), (8, 8285165), (10, 6628132), (14, 4734380), (20, 3314066), (28, 2367190), (35, 1893752), (40, 1657033), (49, 1352680), (56, 1183595), (70, 946876), (98, 676340), (140, 473438), (196, 338170), (245, 270536), (280, 236719), (343, 193240), (392, 169085), (490, 135268), (686, 96620), (980, 67634), (1372, 48310), (1715, 38648), (1960, 33817), (2744, 24155), (3430, 19324), (4831, 13720), (6860, 9662)]