20721172

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{5801}}^1$

素因数の和:5871

約数の個数: 24

約数和(自身を含む): 38989440

約数和(自身を除く): 18268268

約数列:

[1, 2, 4, 19, 38, 47, 76, 94, 188, 893, 1786, 3572, 5801, 11602, 23204, 110219, 220438, 272647, 440876, 545294, 1090588, 5180293, 10360586, 20721172]

約数ペア:

[(1, 20721172), (2, 10360586), (4, 5180293), (19, 1090588), (38, 545294), (47, 440876), (76, 272647), (94, 220438), (188, 110219), (893, 23204), (1786, 11602), (3572, 5801)]