13481360

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3919}}^1$

素因数の和:3975

約数の個数: 40

約数和(自身を含む): 32081280

約数和(自身を除く): 18599920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 3919, 7838, 15676, 19595, 31352, 39190, 62704, 78380, 156760, 168517, 313520, 337034, 674068, 842585, 1348136, 1685170, 2696272, 3370340, 6740680, 13481360]

約数ペア:

[(1, 13481360), (2, 6740680), (4, 3370340), (5, 2696272), (8, 1685170), (10, 1348136), (16, 842585), (20, 674068), (40, 337034), (43, 313520), (80, 168517), (86, 156760), (172, 78380), (215, 62704), (344, 39190), (430, 31352), (688, 19595), (860, 15676), (1720, 7838), (3440, 3919)]