19880360

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{709}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 44857800

約数和(自身を除く): 24977440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 709, 1402, 1418, 2804, 2836, 3505, 3545, 5608, 5672, 7010, 7090, 14020, 14180, 28040, 28360, 497009, 994018, 1988036, 2485045, 3976072, 4970090, 9940180, 19880360]

約数ペア:

[(1, 19880360), (2, 9940180), (4, 4970090), (5, 3976072), (8, 2485045), (10, 1988036), (20, 994018), (40, 497009), (701, 28360), (709, 28040), (1402, 14180), (1418, 14020), (2804, 7090), (2836, 7010), (3505, 5672), (3545, 5608)]