15520040

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3767}}^1$

素因数の和:3881

約数の個数: 32

約数和(自身を含む): 35268480

約数和(自身を除く): 19748440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 3767, 4120, 7534, 15068, 18835, 30136, 37670, 75340, 150680, 388001, 776002, 1552004, 1940005, 3104008, 3880010, 7760020, 15520040]

約数ペア:

[(1, 15520040), (2, 7760020), (4, 3880010), (5, 3104008), (8, 1940005), (10, 1552004), (20, 776002), (40, 388001), (103, 150680), (206, 75340), (412, 37670), (515, 30136), (824, 18835), (1030, 15068), (2060, 7534), (3767, 4120)]