18731535

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 33156000

約数和(自身を除く): 14424465

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 149, 255, 289, 435, 447, 493, 745, 867, 1445, 1479, 2235, 2465, 2533, 4321, 4335, 7395, 7599, 8381, 12665, 12963, 21605, 25143, 37995, 41905, 43061, 64815, 73457, 125715, 129183, 215305, 220371, 367285, 645915, 1101855, 1248769, 3746307, 6243845, 18731535]

約数ペア:

[(1, 18731535), (3, 6243845), (5, 3746307), (15, 1248769), (17, 1101855), (29, 645915), (51, 367285), (85, 220371), (87, 215305), (145, 129183), (149, 125715), (255, 73457), (289, 64815), (435, 43061), (447, 41905), (493, 37995), (745, 25143), (867, 21605), (1445, 12963), (1479, 12665), (2235, 8381), (2465, 7599), (2533, 7395), (4321, 4335)]