21230019

素因数分解:

$3^4\times {\mathrm{349}}^1\times {\mathrm{751}}^1$

素因数の和:1112

約数の個数: 20

約数和(自身を含む): 31847200

約数和(自身を除く): 10617181

約数列:

[1, 3, 9, 27, 81, 349, 751, 1047, 2253, 3141, 6759, 9423, 20277, 28269, 60831, 262099, 786297, 2358891, 7076673, 21230019]

約数ペア:

[(1, 21230019), (3, 7076673), (9, 2358891), (27, 786297), (81, 262099), (349, 60831), (751, 28269), (1047, 20277), (2253, 9423), (3141, 6759)]