77886760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{6469}}^1$

素因数の和:6530

約数の個数: 64

約数和(自身を含む): 204969600

約数和(自身を除く): 127082840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2408, 3010, 6020, 6469, 12040, 12938, 25876, 32345, 45283, 51752, 64690, 90566, 129380, 181132, 226415, 258760, 278167, 362264, 452830, 556334, 905660, 1112668, 1390835, 1811320, 1947169, 2225336, 2781670, 3894338, 5563340, 7788676, 9735845, 11126680, 15577352, 19471690, 38943380, 77886760]

約数ペア:

[(1, 77886760), (2, 38943380), (4, 19471690), (5, 15577352), (7, 11126680), (8, 9735845), (10, 7788676), (14, 5563340), (20, 3894338), (28, 2781670), (35, 2225336), (40, 1947169), (43, 1811320), (56, 1390835), (70, 1112668), (86, 905660), (140, 556334), (172, 452830), (215, 362264), (280, 278167), (301, 258760), (344, 226415), (430, 181132), (602, 129380), (860, 90566), (1204, 64690), (1505, 51752), (1720, 45283), (2408, 32345), (3010, 25876), (6020, 12938), (6469, 12040)]