18670940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1097}}^1$

素因数の和:1166

約数の個数: 48

約数和(自身を含む): 42057792

約数和(自身を除く): 23386852

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 74, 92, 115, 148, 185, 230, 370, 460, 740, 851, 1097, 1702, 2194, 3404, 4255, 4388, 5485, 8510, 10970, 17020, 21940, 25231, 40589, 50462, 81178, 100924, 126155, 162356, 202945, 252310, 405890, 504620, 811780, 933547, 1867094, 3734188, 4667735, 9335470, 18670940]

約数ペア:

[(1, 18670940), (2, 9335470), (4, 4667735), (5, 3734188), (10, 1867094), (20, 933547), (23, 811780), (37, 504620), (46, 405890), (74, 252310), (92, 202945), (115, 162356), (148, 126155), (185, 100924), (230, 81178), (370, 50462), (460, 40589), (740, 25231), (851, 21940), (1097, 17020), (1702, 10970), (2194, 8510), (3404, 5485), (4255, 4388)]