20958165

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5233}}^1$

素因数の和:5333

約数の個数: 24

約数和(自身を含む): 36742680

約数和(自身を除く): 15784515

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 5233, 15699, 26165, 47097, 78495, 235485, 465737, 1397211, 2328685, 4191633, 6986055, 20958165]

約数ペア:

[(1, 20958165), (3, 6986055), (5, 4191633), (9, 2328685), (15, 1397211), (45, 465737), (89, 235485), (267, 78495), (445, 47097), (801, 26165), (1335, 15699), (4005, 5233)]