720040

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 1658880

約数和(自身を除く): 938840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 383, 470, 766, 940, 1532, 1880, 1915, 3064, 3830, 7660, 15320, 18001, 36002, 72004, 90005, 144008, 180010, 360020, 720040]

約数ペア:

[(1, 720040), (2, 360020), (4, 180010), (5, 144008), (8, 90005), (10, 72004), (20, 36002), (40, 18001), (47, 15320), (94, 7660), (188, 3830), (235, 3064), (376, 1915), (383, 1880), (470, 1532), (766, 940)]