81611655

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{1151}}^1$

素因数の和:1351

約数の個数: 32

約数和(自身を含む): 136028160

約数和(自身を除く): 54416505

約数列:

[1, 3, 5, 15, 29, 87, 145, 163, 435, 489, 815, 1151, 2445, 3453, 4727, 5755, 14181, 17265, 23635, 33379, 70905, 100137, 166895, 187613, 500685, 562839, 938065, 2814195, 5440777, 16322331, 27203885, 81611655]

約数ペア:

[(1, 81611655), (3, 27203885), (5, 16322331), (15, 5440777), (29, 2814195), (87, 938065), (145, 562839), (163, 500685), (435, 187613), (489, 166895), (815, 100137), (1151, 70905), (2445, 33379), (3453, 23635), (4727, 17265), (5755, 14181)]