20655380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{541}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 45892224

約数和(自身を除く): 25236844

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 83, 92, 115, 166, 230, 332, 415, 460, 541, 830, 1082, 1660, 1909, 2164, 2705, 3818, 5410, 7636, 9545, 10820, 12443, 19090, 24886, 38180, 44903, 49772, 62215, 89806, 124430, 179612, 224515, 248860, 449030, 898060, 1032769, 2065538, 4131076, 5163845, 10327690, 20655380]

約数ペア:

[(1, 20655380), (2, 10327690), (4, 5163845), (5, 4131076), (10, 2065538), (20, 1032769), (23, 898060), (46, 449030), (83, 248860), (92, 224515), (115, 179612), (166, 124430), (230, 89806), (332, 62215), (415, 49772), (460, 44903), (541, 38180), (830, 24886), (1082, 19090), (1660, 12443), (1909, 10820), (2164, 9545), (2705, 7636), (3818, 5410)]