18994755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 33730560

約数和(自身を除く): 14735805

約数列:

[1, 3, 5, 13, 15, 39, 59, 65, 127, 169, 177, 195, 295, 381, 507, 635, 767, 845, 885, 1651, 1905, 2301, 2535, 3835, 4953, 7493, 8255, 9971, 11505, 21463, 22479, 24765, 29913, 37465, 49855, 64389, 97409, 107315, 112395, 149565, 292227, 321945, 487045, 1266317, 1461135, 3798951, 6331585, 18994755]

約数ペア:

[(1, 18994755), (3, 6331585), (5, 3798951), (13, 1461135), (15, 1266317), (39, 487045), (59, 321945), (65, 292227), (127, 149565), (169, 112395), (177, 107315), (195, 97409), (295, 64389), (381, 49855), (507, 37465), (635, 29913), (767, 24765), (845, 22479), (885, 21463), (1651, 11505), (1905, 9971), (2301, 8255), (2535, 7493), (3835, 4953)]