20355813

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 31363200

約数和(自身を除く): 11007387

約数列:

[1, 3, 9, 27, 43, 89, 129, 197, 267, 387, 591, 801, 1161, 1773, 2403, 3827, 5319, 8471, 11481, 17533, 25413, 34443, 52599, 76239, 103329, 157797, 228717, 473391, 753919, 2261757, 6785271, 20355813]

約数ペア:

[(1, 20355813), (3, 6785271), (9, 2261757), (27, 753919), (43, 473391), (89, 228717), (129, 157797), (197, 103329), (267, 76239), (387, 52599), (591, 34443), (801, 25413), (1161, 17533), (1773, 11481), (2403, 8471), (3827, 5319)]