18729820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2143}}^1$

素因数の和:2194

約数の個数: 48

約数和(自身を含む): 43223040

約数和(自身を除く): 24493220

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2143, 2185, 4286, 4370, 8572, 8740, 10715, 21430, 40717, 42860, 49289, 81434, 98578, 162868, 197156, 203585, 246445, 407170, 492890, 814340, 936491, 985780, 1872982, 3745964, 4682455, 9364910, 18729820]

約数ペア:

[(1, 18729820), (2, 9364910), (4, 4682455), (5, 3745964), (10, 1872982), (19, 985780), (20, 936491), (23, 814340), (38, 492890), (46, 407170), (76, 246445), (92, 203585), (95, 197156), (115, 162868), (190, 98578), (230, 81434), (380, 49289), (437, 42860), (460, 40717), (874, 21430), (1748, 10715), (2143, 8740), (2185, 8572), (4286, 4370)]