21396515

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{13007}}^1$

素因数の和:13066

約数の個数: 16

約数和(自身を含む): 29970432

約数和(自身を除く): 8573917

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 13007, 65035, 91049, 455245, 611329, 3056645, 4279303, 21396515]

約数ペア:

[(1, 21396515), (5, 4279303), (7, 3056645), (35, 611329), (47, 455245), (235, 91049), (329, 65035), (1645, 13007)]