18219280

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4297}}^1$

素因数の和:4363

約数の個数: 40

約数和(自身を含む): 43169112

約数和(自身を除く): 24949832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4297, 8594, 17188, 21485, 34376, 42970, 68752, 85940, 171880, 227741, 343760, 455482, 910964, 1138705, 1821928, 2277410, 3643856, 4554820, 9109640, 18219280]

約数ペア:

[(1, 18219280), (2, 9109640), (4, 4554820), (5, 3643856), (8, 2277410), (10, 1821928), (16, 1138705), (20, 910964), (40, 455482), (53, 343760), (80, 227741), (106, 171880), (212, 85940), (265, 68752), (424, 42970), (530, 34376), (848, 21485), (1060, 17188), (2120, 8594), (4240, 4297)]