21440545

素因数分解:

$5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{6883}}^1$

素因数の和:6984

約数の個数: 16

約数和(自身を含む): 29738880

約数和(自身を除く): 8298335

約数列:

[1, 5, 7, 35, 89, 445, 623, 3115, 6883, 34415, 48181, 240905, 612587, 3062935, 4288109, 21440545]

約数ペア:

[(1, 21440545), (5, 4288109), (7, 3062935), (35, 612587), (89, 240905), (445, 48181), (623, 34415), (3115, 6883)]