2021000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:111

約数の個数: 64

約数和(自身を含む): 4942080

約数和(自身を除く): 2921080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 47, 50, 86, 94, 100, 125, 172, 188, 200, 215, 235, 250, 344, 376, 430, 470, 500, 860, 940, 1000, 1075, 1175, 1720, 1880, 2021, 2150, 2350, 4042, 4300, 4700, 5375, 5875, 8084, 8600, 9400, 10105, 10750, 11750, 16168, 20210, 21500, 23500, 40420, 43000, 47000, 50525, 80840, 101050, 202100, 252625, 404200, 505250, 1010500, 2021000]

約数ペア:

[(1, 2021000), (2, 1010500), (4, 505250), (5, 404200), (8, 252625), (10, 202100), (20, 101050), (25, 80840), (40, 50525), (43, 47000), (47, 43000), (50, 40420), (86, 23500), (94, 21500), (100, 20210), (125, 16168), (172, 11750), (188, 10750), (200, 10105), (215, 9400), (235, 8600), (250, 8084), (344, 5875), (376, 5375), (430, 4700), (470, 4300), (500, 4042), (860, 2350), (940, 2150), (1000, 2021), (1075, 1880), (1175, 1720)]