18499995

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2687}}^1$

素因数の和:2721

約数の個数: 40

約数和(自身を含む): 35126784

約数和(自身を除く): 16626789

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 2687, 6885, 8061, 13435, 24183, 40305, 45679, 72549, 120915, 137037, 217647, 228395, 362745, 411111, 685185, 1088235, 1233333, 2055555, 3699999, 6166665, 18499995]

約数ペア:

[(1, 18499995), (3, 6166665), (5, 3699999), (9, 2055555), (15, 1233333), (17, 1088235), (27, 685185), (45, 411111), (51, 362745), (81, 228395), (85, 217647), (135, 137037), (153, 120915), (255, 72549), (405, 45679), (459, 40305), (765, 24183), (1377, 13435), (2295, 8061), (2687, 6885)]