19993605

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{73}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 35271360

約数和(自身を除く): 15277755

約数列:

[1, 3, 5, 15, 19, 31, 57, 73, 93, 95, 155, 219, 285, 365, 465, 589, 961, 1095, 1387, 1767, 2263, 2883, 2945, 4161, 4805, 6789, 6935, 8835, 11315, 14415, 18259, 20805, 33945, 42997, 54777, 70153, 91295, 128991, 210459, 214985, 273885, 350765, 644955, 1052295, 1332907, 3998721, 6664535, 19993605]

約数ペア:

[(1, 19993605), (3, 6664535), (5, 3998721), (15, 1332907), (19, 1052295), (31, 644955), (57, 350765), (73, 273885), (93, 214985), (95, 210459), (155, 128991), (219, 91295), (285, 70153), (365, 54777), (465, 42997), (589, 33945), (961, 20805), (1095, 18259), (1387, 14415), (1767, 11315), (2263, 8835), (2883, 6935), (2945, 6789), (4161, 4805)]