81394821

素因数分解:

$3^3\times {\mathrm{641}}^1\times {\mathrm{4703}}^1$

素因数の和:5353

約数の個数: 16

約数和(自身を含む): 120798720

約数和(自身を除く): 39403899

約数列:

[1, 3, 9, 27, 641, 1923, 4703, 5769, 14109, 17307, 42327, 126981, 3014623, 9043869, 27131607, 81394821]

約数ペア:

[(1, 81394821), (3, 27131607), (9, 9043869), (27, 3014623), (641, 126981), (1923, 42327), (4703, 17307), (5769, 14109)]