18967025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 11031055

約数列:

[1, 5, 7, 11, 25, 35, 55, 59, 77, 167, 175, 275, 295, 385, 413, 649, 835, 1169, 1475, 1837, 1925, 2065, 3245, 4175, 4543, 5845, 9185, 9853, 10325, 12859, 16225, 22715, 29225, 45925, 49265, 64295, 68971, 108383, 113575, 246325, 321475, 344855, 541915, 758681, 1724275, 2709575, 3793405, 18967025]

約数ペア:

[(1, 18967025), (5, 3793405), (7, 2709575), (11, 1724275), (25, 758681), (35, 541915), (55, 344855), (59, 321475), (77, 246325), (167, 113575), (175, 108383), (275, 68971), (295, 64295), (385, 49265), (413, 45925), (649, 29225), (835, 22715), (1169, 16225), (1475, 12859), (1837, 10325), (1925, 9853), (2065, 9185), (3245, 5845), (4175, 4543)]