21074085

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10891}}^1$

素因数の和:10945

約数の個数: 24

約数和(自身を含む): 37381344

約数和(自身を除く): 16307259

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10891, 32673, 54455, 98019, 163365, 468313, 490095, 1404939, 2341565, 4214817, 7024695, 21074085]

約数ペア:

[(1, 21074085), (3, 7024695), (5, 4214817), (9, 2341565), (15, 1404939), (43, 490095), (45, 468313), (129, 163365), (215, 98019), (387, 54455), (645, 32673), (1935, 10891)]