20441565

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2969}}^1$

素因数の和:3003

約数の個数: 40

約数和(自身を含む): 38811960

約数和(自身を除く): 18370395

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 2969, 6885, 8907, 14845, 26721, 44535, 50473, 80163, 133605, 151419, 240489, 252365, 400815, 454257, 757095, 1202445, 1362771, 2271285, 4088313, 6813855, 20441565]

約数ペア:

[(1, 20441565), (3, 6813855), (5, 4088313), (9, 2271285), (15, 1362771), (17, 1202445), (27, 757095), (45, 454257), (51, 400815), (81, 252365), (85, 240489), (135, 151419), (153, 133605), (255, 80163), (405, 50473), (459, 44535), (765, 26721), (1377, 14845), (2295, 8907), (2969, 6885)]