18307215

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2659}}^1$

素因数の和:2693

約数の個数: 40

約数和(自身を含む): 34760880

約数和(自身を除く): 16453665

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 2659, 6885, 7977, 13295, 23931, 39885, 45203, 71793, 119655, 135609, 215379, 226015, 358965, 406827, 678045, 1076895, 1220481, 2034135, 3661443, 6102405, 18307215]

約数ペア:

[(1, 18307215), (3, 6102405), (5, 3661443), (9, 2034135), (15, 1220481), (17, 1076895), (27, 678045), (45, 406827), (51, 358965), (81, 226015), (85, 215379), (135, 135609), (153, 119655), (255, 71793), (405, 45203), (459, 39885), (765, 23931), (1377, 13295), (2295, 7977), (2659, 6885)]