21698660

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1172

約数の個数: 48

約数和(自身を含む): 48698496

約数和(自身を除く): 26999836

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1097, 1978, 2194, 3956, 4388, 4945, 5485, 9890, 10970, 19780, 21940, 25231, 47171, 50462, 94342, 100924, 126155, 188684, 235855, 252310, 471710, 504620, 943420, 1084933, 2169866, 4339732, 5424665, 10849330, 21698660]

約数ペア:

[(1, 21698660), (2, 10849330), (4, 5424665), (5, 4339732), (10, 2169866), (20, 1084933), (23, 943420), (43, 504620), (46, 471710), (86, 252310), (92, 235855), (115, 188684), (172, 126155), (215, 100924), (230, 94342), (430, 50462), (460, 47171), (860, 25231), (989, 21940), (1097, 19780), (1978, 10970), (2194, 9890), (3956, 5485), (4388, 4945)]