20999788947

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{317}}^1\times {\mathrm{17909}}^1$

素因数の和:18372

約数の個数: 32

約数和(自身を含む): 31438497600

約数和(自身を除く): 10438708653

約数列:

[1, 3, 9, 27, 137, 317, 411, 951, 1233, 2853, 3699, 8559, 17909, 43429, 53727, 130287, 161181, 390861, 483543, 1172583, 2453533, 5677153, 7360599, 17031459, 22081797, 51094377, 66245391, 153283131, 777769961, 2333309883, 6999929649, 20999788947]

約数ペア:

[(1, 20999788947), (3, 6999929649), (9, 2333309883), (27, 777769961), (137, 153283131), (317, 66245391), (411, 51094377), (951, 22081797), (1233, 17031459), (2853, 7360599), (3699, 5677153), (8559, 2453533), (17909, 1172583), (43429, 483543), (53727, 390861), (130287, 161181)]