20888091

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 37939200

約数和(自身を除く): 17051109

約数列:

[1, 3, 7, 9, 21, 27, 29, 37, 63, 87, 103, 111, 189, 203, 259, 261, 309, 333, 609, 721, 777, 783, 927, 999, 1073, 1827, 2163, 2331, 2781, 2987, 3219, 3811, 5481, 6489, 6993, 7511, 8961, 9657, 11433, 19467, 20909, 22533, 26677, 26883, 28971, 34299, 62727, 67599, 80031, 80649, 102897, 110519, 188181, 202797, 240093, 331557, 564543, 720279, 773633, 994671, 2320899, 2984013, 6962697, 20888091]

約数ペア:

[(1, 20888091), (3, 6962697), (7, 2984013), (9, 2320899), (21, 994671), (27, 773633), (29, 720279), (37, 564543), (63, 331557), (87, 240093), (103, 202797), (111, 188181), (189, 110519), (203, 102897), (259, 80649), (261, 80031), (309, 67599), (333, 62727), (609, 34299), (721, 28971), (777, 26883), (783, 26677), (927, 22533), (999, 20909), (1073, 19467), (1827, 11433), (2163, 9657), (2331, 8961), (2781, 7511), (2987, 6993), (3219, 6489), (3811, 5481)]