20997200

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{7499}}^1$

素因数の和:7524

約数の個数: 60

約数和(自身を含む): 57660000

約数和(自身を除く): 36662800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800, 7499, 14998, 29996, 37495, 52493, 59992, 74990, 104986, 119984, 149980, 187475, 209972, 262465, 299960, 374950, 419944, 524930, 599920, 749900, 839888, 1049860, 1312325, 1499800, 2099720, 2624650, 2999600, 4199440, 5249300, 10498600, 20997200]

約数ペア:

[(1, 20997200), (2, 10498600), (4, 5249300), (5, 4199440), (7, 2999600), (8, 2624650), (10, 2099720), (14, 1499800), (16, 1312325), (20, 1049860), (25, 839888), (28, 749900), (35, 599920), (40, 524930), (50, 419944), (56, 374950), (70, 299960), (80, 262465), (100, 209972), (112, 187475), (140, 149980), (175, 119984), (200, 104986), (280, 74990), (350, 59992), (400, 52493), (560, 37495), (700, 29996), (1400, 14998), (2800, 7499)]