28204119

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{5197}}^1$

素因数の和:5276

約数の個数: 20

約数和(自身を含む): 42769144

約数和(自身を除く): 14565025

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 5197, 5427, 15591, 46773, 140319, 348199, 420957, 1044597, 3133791, 9401373, 28204119]

約数ペア:

[(1, 28204119), (3, 9401373), (9, 3133791), (27, 1044597), (67, 420957), (81, 348199), (201, 140319), (603, 46773), (1809, 15591), (5197, 5427)]