280496720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{500887}}^1$

素因数の和:500907

約数の個数: 40

約数和(自身を含む): 745321344

約数和(自身を除く): 464824624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 500887, 1001774, 2003548, 2504435, 3506209, 4007096, 5008870, 7012418, 8014192, 10017740, 14024836, 17531045, 20035480, 28049672, 35062090, 40070960, 56099344, 70124180, 140248360, 280496720]

約数ペア:

[(1, 280496720), (2, 140248360), (4, 70124180), (5, 56099344), (7, 40070960), (8, 35062090), (10, 28049672), (14, 20035480), (16, 17531045), (20, 14024836), (28, 10017740), (35, 8014192), (40, 7012418), (56, 5008870), (70, 4007096), (80, 3506209), (112, 2504435), (140, 2003548), (280, 1001774), (560, 500887)]