21680845

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{587}}^1$

素因数の和:764

約数の個数: 16

約数和(自身を含む): 26671680

約数和(自身を除く): 4990835

約数列:

[1, 5, 83, 89, 415, 445, 587, 2935, 7387, 36935, 48721, 52243, 243605, 261215, 4336169, 21680845]

約数ペア:

[(1, 21680845), (5, 4336169), (83, 261215), (89, 243605), (415, 52243), (445, 48721), (587, 36935), (2935, 7387)]