19894845

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1279}}^1$

素因数の和:1365

約数の個数: 32

約数和(自身を含む): 34283520

約数和(自身を除く): 14388675

約数列:

[1, 3, 5, 15, 17, 51, 61, 85, 183, 255, 305, 915, 1037, 1279, 3111, 3837, 5185, 6395, 15555, 19185, 21743, 65229, 78019, 108715, 234057, 326145, 390095, 1170285, 1326323, 3978969, 6631615, 19894845]

約数ペア:

[(1, 19894845), (3, 6631615), (5, 3978969), (15, 1326323), (17, 1170285), (51, 390095), (61, 326145), (85, 234057), (183, 108715), (255, 78019), (305, 65229), (915, 21743), (1037, 19185), (1279, 15555), (3111, 6395), (3837, 5185)]