30421209

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{15919}}^1$

素因数の和:15949

約数の個数: 24

約数和(自身を含む): 50816640

約数和(自身を除く): 20395431

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 15919, 47757, 111433, 206947, 334299, 620841, 780031, 1448629, 2340093, 4345887, 10140403, 30421209]

約数ペア:

[(1, 30421209), (3, 10140403), (7, 4345887), (13, 2340093), (21, 1448629), (39, 780031), (49, 620841), (91, 334299), (147, 206947), (273, 111433), (637, 47757), (1911, 15919)]