21065733

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{449}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 32923800

約数和(自身を除く): 11858067

約数列:

[1, 3, 9, 13, 39, 117, 401, 449, 1203, 1347, 3609, 4041, 5213, 5837, 15639, 17511, 46917, 52533, 180049, 540147, 1620441, 2340637, 7021911, 21065733]

約数ペア:

[(1, 21065733), (3, 7021911), (9, 2340637), (13, 1620441), (39, 540147), (117, 180049), (401, 52533), (449, 46917), (1203, 17511), (1347, 15639), (3609, 5837), (4041, 5213)]