18016828

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:218

約数の個数: 36

約数和(自身を含む): 33642840

約数和(自身を除く): 15626012

約数列:

[1, 2, 4, 31, 43, 62, 86, 109, 124, 172, 218, 436, 961, 1333, 1922, 2666, 3379, 3844, 4687, 5332, 6758, 9374, 13516, 18748, 41323, 82646, 104749, 145297, 165292, 209498, 290594, 418996, 581188, 4504207, 9008414, 18016828]

約数ペア:

[(1, 18016828), (2, 9008414), (4, 4504207), (31, 581188), (43, 418996), (62, 290594), (86, 209498), (109, 165292), (124, 145297), (172, 104749), (218, 82646), (436, 41323), (961, 18748), (1333, 13516), (1922, 9374), (2666, 6758), (3379, 5332), (3844, 4687)]