21238767

素因数分解:

$3^4\times {\mathrm{11}}^3\times {\mathrm{197}}^1$

素因数の和:242

約数の個数: 40

約数和(自身を含む): 35074512

約数和(自身を除く): 13835745

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 121, 197, 297, 363, 591, 891, 1089, 1331, 1773, 2167, 3267, 3993, 5319, 6501, 9801, 11979, 15957, 19503, 23837, 35937, 58509, 71511, 107811, 175527, 214533, 262207, 643599, 786621, 1930797, 2359863, 7079589, 21238767]

約数ペア:

[(1, 21238767), (3, 7079589), (9, 2359863), (11, 1930797), (27, 786621), (33, 643599), (81, 262207), (99, 214533), (121, 175527), (197, 107811), (297, 71511), (363, 58509), (591, 35937), (891, 23837), (1089, 19503), (1331, 15957), (1773, 11979), (2167, 9801), (3267, 6501), (3993, 5319)]