21581199

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{761}}^1$

素因数の和:927

約数の個数: 24

約数和(自身を含む): 32808672

約数和(自身を除く): 11227473

約数列:

[1, 3, 9, 23, 69, 137, 207, 411, 761, 1233, 2283, 3151, 6849, 9453, 17503, 28359, 52509, 104257, 157527, 312771, 938313, 2397911, 7193733, 21581199]

約数ペア:

[(1, 21581199), (3, 7193733), (9, 2397911), (23, 938313), (69, 312771), (137, 157527), (207, 104257), (411, 52509), (761, 28359), (1233, 17503), (2283, 9453), (3151, 6849)]