64960040

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{15767}}^1$

素因数の和:15881

約数の個数: 32

約数和(自身を含む): 147588480

約数和(自身を除く): 82628440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 15767, 31534, 63068, 78835, 126136, 157670, 315340, 630680, 1624001, 3248002, 6496004, 8120005, 12992008, 16240010, 32480020, 64960040]

約数ペア:

[(1, 64960040), (2, 32480020), (4, 16240010), (5, 12992008), (8, 8120005), (10, 6496004), (20, 3248002), (40, 1624001), (103, 630680), (206, 315340), (412, 157670), (515, 126136), (824, 78835), (1030, 63068), (2060, 31534), (4120, 15767)]