20201951

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 6409249

約数列:

[1, 7, 11, 29, 77, 83, 109, 203, 319, 581, 763, 913, 1199, 2233, 2407, 3161, 6391, 8393, 9047, 16849, 22127, 26477, 34771, 63329, 99517, 185339, 243397, 262363, 696619, 1836541, 2885993, 20201951]

約数ペア:

[(1, 20201951), (7, 2885993), (11, 1836541), (29, 696619), (77, 262363), (83, 243397), (109, 185339), (203, 99517), (319, 63329), (581, 34771), (763, 26477), (913, 22127), (1199, 16849), (2233, 9047), (2407, 8393), (3161, 6391)]