21994713

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{281}}^1$

素因数の和:526

約数の個数: 32

約数和(自身を含む): 35374080

約数和(自身を除く): 13379367

約数列:

[1, 3, 9, 13, 27, 39, 117, 223, 281, 351, 669, 843, 2007, 2529, 2899, 3653, 6021, 7587, 8697, 10959, 26091, 32877, 62663, 78273, 98631, 187989, 563967, 814619, 1691901, 2443857, 7331571, 21994713]

約数ペア:

[(1, 21994713), (3, 7331571), (9, 2443857), (13, 1691901), (27, 814619), (39, 563967), (117, 187989), (223, 98631), (281, 78273), (351, 62663), (669, 32877), (843, 26091), (2007, 10959), (2529, 8697), (2899, 7587), (3653, 6021)]