21042190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12451}}^1$

素因数の和:12484

約数の個数: 24

約数和(自身を含む): 41016888

約数和(自身を除く): 19974698

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12451, 24902, 62255, 124510, 161863, 323726, 809315, 1618630, 2104219, 4208438, 10521095, 21042190]

約数ペア:

[(1, 21042190), (2, 10521095), (5, 4208438), (10, 2104219), (13, 1618630), (26, 809315), (65, 323726), (130, 161863), (169, 124510), (338, 62255), (845, 24902), (1690, 12451)]