19937680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{35603}}^1$

素因数の和:35623

約数の個数: 40

約数和(自身を含む): 52978752

約数和(自身を除く): 33041072

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 35603, 71206, 142412, 178015, 249221, 284824, 356030, 498442, 569648, 712060, 996884, 1246105, 1424120, 1993768, 2492210, 2848240, 3987536, 4984420, 9968840, 19937680]

約数ペア:

[(1, 19937680), (2, 9968840), (4, 4984420), (5, 3987536), (7, 2848240), (8, 2492210), (10, 1993768), (14, 1424120), (16, 1246105), (20, 996884), (28, 712060), (35, 569648), (40, 498442), (56, 356030), (70, 284824), (80, 249221), (112, 178015), (140, 142412), (280, 71206), (560, 35603)]