21533649

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 29198400

約数和(自身を除く): 7664751

約数列:

[1, 3, 131, 157, 349, 393, 471, 1047, 20567, 45719, 54793, 61701, 137157, 164379, 7177883, 21533649]

約数ペア:

[(1, 21533649), (3, 7177883), (131, 164379), (157, 137157), (349, 61701), (393, 54793), (471, 45719), (1047, 20567)]