18640540

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{5581}}^1$

素因数の和:5757

約数の個数: 24

約数和(自身を含む): 39386592

約数和(自身を除く): 20746052

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 5581, 11162, 22324, 27905, 55810, 111620, 932027, 1864054, 3728108, 4660135, 9320270, 18640540]

約数ペア:

[(1, 18640540), (2, 9320270), (4, 4660135), (5, 3728108), (10, 1864054), (20, 932027), (167, 111620), (334, 55810), (668, 27905), (835, 22324), (1670, 11162), (3340, 5581)]