21004810

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25307}}^1$

素因数の和:25397

約数の個数: 16

約数和(自身を含む): 38265696

約数和(自身を除く): 17260886

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 25307, 50614, 126535, 253070, 2100481, 4200962, 10502405, 21004810]

約数ペア:

[(1, 21004810), (2, 10502405), (5, 4200962), (10, 2100481), (83, 253070), (166, 126535), (415, 50614), (830, 25307)]