21712990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167023}}^1$

素因数の和:167043

約数の個数: 16

約数和(自身を含む): 42090048

約数和(自身を除く): 20377058

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 167023, 334046, 835115, 1670230, 2171299, 4342598, 10856495, 21712990]

約数ペア:

[(1, 21712990), (2, 10856495), (5, 4342598), (10, 2171299), (13, 1670230), (26, 835115), (65, 334046), (130, 167023)]