4006840

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{919}}^1$

素因数の和:1039

約数の個数: 32

約数和(自身を含む): 9108000

約数和(自身を除く): 5101160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 919, 1090, 1838, 2180, 3676, 4360, 4595, 7352, 9190, 18380, 36760, 100171, 200342, 400684, 500855, 801368, 1001710, 2003420, 4006840]

約数ペア:

[(1, 4006840), (2, 2003420), (4, 1001710), (5, 801368), (8, 500855), (10, 400684), (20, 200342), (40, 100171), (109, 36760), (218, 18380), (436, 9190), (545, 7352), (872, 4595), (919, 4360), (1090, 3676), (1838, 2180)]