20862681

素因数分解:

$3^1\times 7^2\times {\mathrm{347}}^1\times {\mathrm{409}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 32531040

約数和(自身を除く): 11668359

約数列:

[1, 3, 7, 21, 49, 147, 347, 409, 1041, 1227, 2429, 2863, 7287, 8589, 17003, 20041, 51009, 60123, 141923, 425769, 993461, 2980383, 6954227, 20862681]

約数ペア:

[(1, 20862681), (3, 6954227), (7, 2980383), (21, 993461), (49, 425769), (147, 141923), (347, 60123), (409, 51009), (1041, 20041), (1227, 17003), (2429, 8589), (2863, 7287)]