18163880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{64871}}^1$

素因数の和:64889

約数の個数: 32

約数和(自身を含む): 46707840

約数和(自身を除く): 28543960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 64871, 129742, 259484, 324355, 454097, 518968, 648710, 908194, 1297420, 1816388, 2270485, 2594840, 3632776, 4540970, 9081940, 18163880]

約数ペア:

[(1, 18163880), (2, 9081940), (4, 4540970), (5, 3632776), (7, 2594840), (8, 2270485), (10, 1816388), (14, 1297420), (20, 908194), (28, 648710), (35, 518968), (40, 454097), (56, 324355), (70, 259484), (140, 129742), (280, 64871)]