204745380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{487489}}^1$

素因数の和:487508

約数の個数: 48

約数和(自身を含む): 655186560

約数和(自身を除く): 450441180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 487489, 974978, 1462467, 1949956, 2437445, 2924934, 3412423, 4874890, 5849868, 6824846, 7312335, 9749780, 10237269, 13649692, 14624670, 17062115, 20474538, 29249340, 34124230, 40949076, 51186345, 68248460, 102372690, 204745380]

約数ペア:

[(1, 204745380), (2, 102372690), (3, 68248460), (4, 51186345), (5, 40949076), (6, 34124230), (7, 29249340), (10, 20474538), (12, 17062115), (14, 14624670), (15, 13649692), (20, 10237269), (21, 9749780), (28, 7312335), (30, 6824846), (35, 5849868), (42, 4874890), (60, 3412423), (70, 2924934), (84, 2437445), (105, 1949956), (140, 1462467), (210, 974978), (420, 487489)]