21971005

素因数分解:

$5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{1289}}^1$

素因数の和:1788

約数の個数: 16

約数和(自身を含む): 30216960

約数和(自身を除く): 8245955

約数列:

[1, 5, 7, 35, 487, 1289, 2435, 3409, 6445, 9023, 17045, 45115, 627743, 3138715, 4394201, 21971005]

約数ペア:

[(1, 21971005), (5, 4394201), (7, 3138715), (35, 627743), (487, 45115), (1289, 17045), (2435, 9023), (3409, 6445)]