20742021

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:422

約数の個数: 32

約数和(自身を含む): 32440320

約数和(自身を除く): 11698299

約数列:

[1, 3, 9, 23, 27, 69, 127, 207, 263, 381, 621, 789, 1143, 2367, 2921, 3429, 6049, 7101, 8763, 18147, 26289, 33401, 54441, 78867, 100203, 163323, 300609, 768223, 901827, 2304669, 6914007, 20742021]

約数ペア:

[(1, 20742021), (3, 6914007), (9, 2304669), (23, 901827), (27, 768223), (69, 300609), (127, 163323), (207, 100203), (263, 78867), (381, 54441), (621, 33401), (789, 26289), (1143, 18147), (2367, 8763), (2921, 7101), (3429, 6049)]