18926865

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2749}}^1$

素因数の和:2783

約数の個数: 40

約数和(自身を含む): 35937000

約数和(自身を除く): 17010135

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 2749, 6885, 8247, 13745, 24741, 41235, 46733, 74223, 123705, 140199, 222669, 233665, 371115, 420597, 700995, 1113345, 1261791, 2102985, 3785373, 6308955, 18926865]

約数ペア:

[(1, 18926865), (3, 6308955), (5, 3785373), (9, 2102985), (15, 1261791), (17, 1113345), (27, 700995), (45, 420597), (51, 371115), (81, 233665), (85, 222669), (135, 140199), (153, 123705), (255, 74223), (405, 46733), (459, 41235), (765, 24741), (1377, 13745), (2295, 8247), (2749, 6885)]