81681345

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{35591}}^1$

素因数の和:35622

約数の個数: 32

約数和(自身を含む): 153757440

約数和(自身を除く): 72076095

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 35591, 106773, 177955, 320319, 533865, 605047, 960957, 1601595, 1815141, 3025235, 4804785, 5445423, 9075705, 16336269, 27227115, 81681345]

約数ペア:

[(1, 81681345), (3, 27227115), (5, 16336269), (9, 9075705), (15, 5445423), (17, 4804785), (27, 3025235), (45, 1815141), (51, 1601595), (85, 960957), (135, 605047), (153, 533865), (255, 320319), (459, 177955), (765, 106773), (2295, 35591)]