81819171

素因数分解:

$3^2\times 7^2\times {\mathrm{185531}}^1$

素因数の和:185551

約数の個数: 18

約数和(自身を含む): 137479212

約数和(自身を除く): 55660041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 185531, 556593, 1298717, 1669779, 3896151, 9091019, 11688453, 27273057, 81819171]

約数ペア:

[(1, 81819171), (3, 27273057), (7, 11688453), (9, 9091019), (21, 3896151), (49, 1669779), (63, 1298717), (147, 556593), (441, 185531)]