18814720

素因数分解:

$2^8\times 5^1\times {\mathrm{14699}}^1$

素因数の和:14720

約数の個数: 36

約数和(自身を含む): 45070200

約数和(自身を除く): 26255480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 14699, 29398, 58796, 73495, 117592, 146990, 235184, 293980, 470368, 587960, 940736, 1175920, 1881472, 2351840, 3762944, 4703680, 9407360, 18814720]

約数ペア:

[(1, 18814720), (2, 9407360), (4, 4703680), (5, 3762944), (8, 2351840), (10, 1881472), (16, 1175920), (20, 940736), (32, 587960), (40, 470368), (64, 293980), (80, 235184), (128, 146990), (160, 117592), (256, 73495), (320, 58796), (640, 29398), (1280, 14699)]