18912640

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1019}}^1$

素因数の和:1067

約数の個数: 64

約数和(自身を含む): 46818000

約数和(自身を除く): 27905360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 290, 320, 464, 580, 640, 928, 1019, 1160, 1856, 2038, 2320, 3712, 4076, 4640, 5095, 8152, 9280, 10190, 16304, 18560, 20380, 29551, 32608, 40760, 59102, 65216, 81520, 118204, 130432, 147755, 163040, 236408, 295510, 326080, 472816, 591020, 652160, 945632, 1182040, 1891264, 2364080, 3782528, 4728160, 9456320, 18912640]

約数ペア:

[(1, 18912640), (2, 9456320), (4, 4728160), (5, 3782528), (8, 2364080), (10, 1891264), (16, 1182040), (20, 945632), (29, 652160), (32, 591020), (40, 472816), (58, 326080), (64, 295510), (80, 236408), (116, 163040), (128, 147755), (145, 130432), (160, 118204), (232, 81520), (290, 65216), (320, 59102), (464, 40760), (580, 32608), (640, 29551), (928, 20380), (1019, 18560), (1160, 16304), (1856, 10190), (2038, 9280), (2320, 8152), (3712, 5095), (4076, 4640)]