21756285

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3529}}^1$

素因数の和:3677

約数の個数: 24

約数和(自身を含む): 37996920

約数和(自身を除く): 16240635

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 3529, 6165, 10587, 17645, 31761, 52935, 158805, 483473, 1450419, 2417365, 4351257, 7252095, 21756285]

約数ペア:

[(1, 21756285), (3, 7252095), (5, 4351257), (9, 2417365), (15, 1450419), (45, 483473), (137, 158805), (411, 52935), (685, 31761), (1233, 17645), (2055, 10587), (3529, 6165)]