139888280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{499601}}^1$

素因数の和:499619

約数の個数: 32

約数和(自身を含む): 359713440

約数和(自身を除く): 219825160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 499601, 999202, 1998404, 2498005, 3497207, 3996808, 4996010, 6994414, 9992020, 13988828, 17486035, 19984040, 27977656, 34972070, 69944140, 139888280]

約数ペア:

[(1, 139888280), (2, 69944140), (4, 34972070), (5, 27977656), (7, 19984040), (8, 17486035), (10, 13988828), (14, 9992020), (20, 6994414), (28, 4996010), (35, 3996808), (40, 3497207), (56, 2498005), (70, 1998404), (140, 999202), (280, 499601)]