20554513

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3259}}^1$

素因数の和:3336

約数の個数: 16

約数和(自身を含む): 25349760

約数和(自身を除く): 4795247

約数列:

[1, 7, 17, 53, 119, 371, 901, 3259, 6307, 22813, 55403, 172727, 387821, 1209089, 2936359, 20554513]

約数ペア:

[(1, 20554513), (7, 2936359), (17, 1209089), (53, 387821), (119, 172727), (371, 55403), (901, 22813), (3259, 6307)]