81900801

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{12799}}^1$

素因数の和:12890

約数の個数: 20

約数和(自身を含む): 123904000

約数和(自身を除く): 42003199

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 6399, 12799, 38397, 115191, 345573, 1011121, 1036719, 3033363, 9100089, 27300267, 81900801]

約数ペア:

[(1, 81900801), (3, 27300267), (9, 9100089), (27, 3033363), (79, 1036719), (81, 1011121), (237, 345573), (711, 115191), (2133, 38397), (6399, 12799)]