20991201

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{751}}^1$

素因数の和:794

約数の個数: 32

約数和(自身を含む): 35229696

約数和(自身を除く): 14238495

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 751, 847, 1331, 2253, 2541, 3993, 5257, 8261, 9317, 15771, 24783, 27951, 57827, 90871, 173481, 272613, 636097, 999581, 1908291, 2998743, 6997067, 20991201]

約数ペア:

[(1, 20991201), (3, 6997067), (7, 2998743), (11, 1908291), (21, 999581), (33, 636097), (77, 272613), (121, 173481), (231, 90871), (363, 57827), (751, 27951), (847, 24783), (1331, 15771), (2253, 9317), (2541, 8261), (3993, 5257)]