20406749

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:181

約数の個数: 32

約数和(自身を含む): 25194240

約数和(自身を除く): 4787491

約数列:

[1, 11, 17, 29, 53, 71, 187, 319, 493, 583, 781, 901, 1207, 1537, 2059, 3763, 5423, 9911, 13277, 16907, 22649, 26129, 35003, 41393, 63971, 109127, 287419, 385033, 703681, 1200397, 1855159, 20406749]

約数ペア:

[(1, 20406749), (11, 1855159), (17, 1200397), (29, 703681), (53, 385033), (71, 287419), (187, 109127), (319, 63971), (493, 41393), (583, 35003), (781, 26129), (901, 22649), (1207, 16907), (1537, 13277), (2059, 9911), (3763, 5423)]