21103640492

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43602563}}^1$

素因数の和:43602589

約数の個数: 18

約数和(自身を含む): 40593987084

約数和(自身を除く): 19490346592

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43602563, 87205126, 174410252, 479628193, 959256386, 1918512772, 5275910123, 10551820246, 21103640492]

約数ペア:

[(1, 21103640492), (2, 10551820246), (4, 5275910123), (11, 1918512772), (22, 959256386), (44, 479628193), (121, 174410252), (242, 87205126), (484, 43602563)]