280784560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{501401}}^1$

素因数の和:501421

約数の個数: 40

約数和(自身を含む): 746086176

約数和(自身を除く): 465301616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 501401, 1002802, 2005604, 2507005, 3509807, 4011208, 5014010, 7019614, 8022416, 10028020, 14039228, 17549035, 20056040, 28078456, 35098070, 40112080, 56156912, 70196140, 140392280, 280784560]

約数ペア:

[(1, 280784560), (2, 140392280), (4, 70196140), (5, 56156912), (7, 40112080), (8, 35098070), (10, 28078456), (14, 20056040), (16, 17549035), (20, 14039228), (28, 10028020), (35, 8022416), (40, 7019614), (56, 5014010), (70, 4011208), (80, 3509807), (112, 2507005), (140, 2005604), (280, 1002802), (560, 501401)]