81808587

素因数分解:

$3^2\times 7^3\times {\mathrm{26501}}^1$

素因数の和:26528

約数の個数: 24

約数和(自身を含む): 137810400

約数和(自身を除く): 56001813

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 26501, 79503, 185507, 238509, 556521, 1298549, 1669563, 3895647, 9089843, 11686941, 27269529, 81808587]

約数ペア:

[(1, 81808587), (3, 27269529), (7, 11686941), (9, 9089843), (21, 3895647), (49, 1669563), (63, 1298549), (147, 556521), (343, 238509), (441, 185507), (1029, 79503), (3087, 26501)]