78721587

素因数分解:

$3^2\times 7^4\times {\mathrm{3643}}^1$

素因数の和:3677

約数の個数: 30

約数和(自身を含む): 132688972

約数和(自身を除く): 53967385

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 2401, 3087, 3643, 7203, 10929, 21609, 25501, 32787, 76503, 178507, 229509, 535521, 1249549, 1606563, 3748647, 8746843, 11245941, 26240529, 78721587]

約数ペア:

[(1, 78721587), (3, 26240529), (7, 11245941), (9, 8746843), (21, 3748647), (49, 1606563), (63, 1249549), (147, 535521), (343, 229509), (441, 178507), (1029, 76503), (2401, 32787), (3087, 25501), (3643, 21609), (7203, 10929)]