20986581

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1933}}^1$

素因数の和:2001

約数の個数: 32

約数和(自身を含む): 35647488

約数和(自身を除く): 14660907

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 141, 231, 329, 517, 987, 1551, 1933, 3619, 5799, 10857, 13531, 21263, 40593, 63789, 90851, 148841, 272553, 446523, 635957, 999361, 1907871, 2998083, 6995527, 20986581]

約数ペア:

[(1, 20986581), (3, 6995527), (7, 2998083), (11, 1907871), (21, 999361), (33, 635957), (47, 446523), (77, 272553), (141, 148841), (231, 90851), (329, 63789), (517, 40593), (987, 21263), (1551, 13531), (1933, 10857), (3619, 5799)]