21130119

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{16651}}^1$

素因数の和:16707

約数の個数: 16

約数和(自身を含む): 31971840

約数和(自身を除く): 10841721

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 16651, 49953, 149859, 449577, 782597, 2347791, 7043373, 21130119]

約数ペア:

[(1, 21130119), (3, 7043373), (9, 2347791), (27, 782597), (47, 449577), (141, 149859), (423, 49953), (1269, 16651)]