20178626

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:746

約数の個数: 32

約数和(自身を含む): 35054208

約数和(自身を除く): 14875582

約数列:

[1, 2, 13, 17, 26, 34, 71, 142, 221, 442, 643, 923, 1207, 1286, 1846, 2414, 8359, 10931, 15691, 16718, 21862, 31382, 45653, 91306, 142103, 284206, 593489, 776101, 1186978, 1552202, 10089313, 20178626]

約数ペア:

[(1, 20178626), (2, 10089313), (13, 1552202), (17, 1186978), (26, 776101), (34, 593489), (71, 284206), (142, 142103), (221, 91306), (442, 45653), (643, 31382), (923, 21862), (1207, 16718), (1286, 15691), (1846, 10931), (2414, 8359)]