1818490640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{528631}}^1$

素因数の和:528687

約数の個数: 40

約数和(自身を含む): 4326324288

約数和(自身を除く): 2507833648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 528631, 1057262, 2114524, 2643155, 4229048, 5286310, 8458096, 10572620, 21145240, 22731133, 42290480, 45462266, 90924532, 113655665, 181849064, 227311330, 363698128, 454622660, 909245320, 1818490640]

約数ペア:

[(1, 1818490640), (2, 909245320), (4, 454622660), (5, 363698128), (8, 227311330), (10, 181849064), (16, 113655665), (20, 90924532), (40, 45462266), (43, 42290480), (80, 22731133), (86, 21145240), (172, 10572620), (215, 8458096), (344, 5286310), (430, 4229048), (688, 2643155), (860, 2114524), (1720, 1057262), (3440, 528631)]