814443640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{186799}}^1$

素因数の和:186919

約数の個数: 32

約数和(自身を含む): 1849320000

約数和(自身を除く): 1034876360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 186799, 373598, 747196, 933995, 1494392, 1867990, 3735980, 7471960, 20361091, 40722182, 81444364, 101805455, 162888728, 203610910, 407221820, 814443640]

約数ペア:

[(1, 814443640), (2, 407221820), (4, 203610910), (5, 162888728), (8, 101805455), (10, 81444364), (20, 40722182), (40, 20361091), (109, 7471960), (218, 3735980), (436, 1867990), (545, 1494392), (872, 933995), (1090, 747196), (2180, 373598), (4360, 186799)]