81457551

素因数分解:

$3^2\times 7^2\times {\mathrm{184711}}^1$

素因数の和:184731

約数の個数: 18

約数和(自身を含む): 136871592

約数和(自身を除く): 55414041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 184711, 554133, 1292977, 1662399, 3878931, 9050839, 11636793, 27152517, 81457551]

約数ペア:

[(1, 81457551), (3, 27152517), (7, 11636793), (9, 9050839), (21, 3878931), (49, 1662399), (63, 1292977), (147, 554133), (441, 184711)]