20722473

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 40

約数和(自身を含む): 33323400

約数和(自身を除く): 12600927

約数列:

[1, 3, 9, 17, 27, 51, 81, 101, 149, 153, 303, 447, 459, 909, 1341, 1377, 1717, 2533, 2727, 4023, 5151, 7599, 8181, 12069, 15049, 15453, 22797, 45147, 46359, 68391, 135441, 139077, 205173, 255833, 406323, 767499, 1218969, 2302497, 6907491, 20722473]

約数ペア:

[(1, 20722473), (3, 6907491), (9, 2302497), (17, 1218969), (27, 767499), (51, 406323), (81, 255833), (101, 205173), (149, 139077), (153, 135441), (303, 68391), (447, 46359), (459, 45147), (909, 22797), (1341, 15453), (1377, 15049), (1717, 12069), (2533, 8181), (2727, 7599), (4023, 5151)]