20907016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3793}}^1$

素因数の和:3865

約数の個数: 32

約数和(自身を含む): 43023960

約数和(自身を除く): 22116944

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3793, 5512, 7586, 15172, 30344, 49309, 98618, 197236, 201029, 394472, 402058, 804116, 1608232, 2613377, 5226754, 10453508, 20907016]

約数ペア:

[(1, 20907016), (2, 10453508), (4, 5226754), (8, 2613377), (13, 1608232), (26, 804116), (52, 402058), (53, 394472), (104, 201029), (106, 197236), (212, 98618), (424, 49309), (689, 30344), (1378, 15172), (2756, 7586), (3793, 5512)]