20992365

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3049}}^1$

素因数の和:3083

約数の個数: 40

約数和(自身を含む): 39857400

約数和(自身を除く): 18865035

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 3049, 6885, 9147, 15245, 27441, 45735, 51833, 82323, 137205, 155499, 246969, 259165, 411615, 466497, 777495, 1234845, 1399491, 2332485, 4198473, 6997455, 20992365]

約数ペア:

[(1, 20992365), (3, 6997455), (5, 4198473), (9, 2332485), (15, 1399491), (17, 1234845), (27, 777495), (45, 466497), (51, 411615), (81, 259165), (85, 246969), (135, 155499), (153, 137205), (255, 82323), (405, 51833), (459, 45735), (765, 27441), (1377, 15245), (2295, 9147), (3049, 6885)]