18705920

素因数分解:

$2^9\times 5^1\times {\mathrm{7307}}^1$

素因数の和:7330

約数の個数: 40

約数和(自身を含む): 44856504

約数和(自身を除く): 26150584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7307, 14614, 29228, 36535, 58456, 73070, 116912, 146140, 233824, 292280, 467648, 584560, 935296, 1169120, 1870592, 2338240, 3741184, 4676480, 9352960, 18705920]

約数ペア:

[(1, 18705920), (2, 9352960), (4, 4676480), (5, 3741184), (8, 2338240), (10, 1870592), (16, 1169120), (20, 935296), (32, 584560), (40, 467648), (64, 292280), (80, 233824), (128, 146140), (160, 116912), (256, 73070), (320, 58456), (512, 36535), (640, 29228), (1280, 14614), (2560, 7307)]