18705280

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2657}}^1$

素因数の和:2687

約数の個数: 64

約数和(自身を含む): 48800880

約数和(自身を除く): 30095600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2657, 3520, 5314, 7040, 10628, 13285, 21256, 26570, 29227, 42512, 53140, 58454, 85024, 106280, 116908, 146135, 170048, 212560, 233816, 292270, 340096, 425120, 467632, 584540, 850240, 935264, 1169080, 1700480, 1870528, 2338160, 3741056, 4676320, 9352640, 18705280]

約数ペア:

[(1, 18705280), (2, 9352640), (4, 4676320), (5, 3741056), (8, 2338160), (10, 1870528), (11, 1700480), (16, 1169080), (20, 935264), (22, 850240), (32, 584540), (40, 467632), (44, 425120), (55, 340096), (64, 292270), (80, 233816), (88, 212560), (110, 170048), (128, 146135), (160, 116908), (176, 106280), (220, 85024), (320, 58454), (352, 53140), (440, 42512), (640, 29227), (704, 26570), (880, 21256), (1408, 13285), (1760, 10628), (2657, 7040), (3520, 5314)]