20237720

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1321}}^1$

素因数の和:1715

約数の個数: 32

約数和(自身を含む): 45688320

約数和(自身を除く): 25450600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1321, 1532, 1915, 2642, 3064, 3830, 5284, 6605, 7660, 10568, 13210, 15320, 26420, 52840, 505943, 1011886, 2023772, 2529715, 4047544, 5059430, 10118860, 20237720]

約数ペア:

[(1, 20237720), (2, 10118860), (4, 5059430), (5, 4047544), (8, 2529715), (10, 2023772), (20, 1011886), (40, 505943), (383, 52840), (766, 26420), (1321, 15320), (1532, 13210), (1915, 10568), (2642, 7660), (3064, 6605), (3830, 5284)]