20915185

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{1021}}^1$

素因数の和:1284

約数の個数: 16

約数和(自身を含む): 26710992

約数和(自身を除く): 5795807

約数列:

[1, 5, 17, 85, 241, 1021, 1205, 4097, 5105, 17357, 20485, 86785, 246061, 1230305, 4183037, 20915185]

約数ペア:

[(1, 20915185), (5, 4183037), (17, 1230305), (85, 246061), (241, 86785), (1021, 20485), (1205, 17357), (4097, 5105)]