20780270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12907}}^1$

素因数の和:12944

約数の個数: 32

約数和(自身を含む): 44610048

約数和(自身を除く): 23829778

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 12907, 25814, 64535, 90349, 129070, 180698, 296861, 451745, 593722, 903490, 1484305, 2078027, 2968610, 4156054, 10390135, 20780270]

約数ペア:

[(1, 20780270), (2, 10390135), (5, 4156054), (7, 2968610), (10, 2078027), (14, 1484305), (23, 903490), (35, 593722), (46, 451745), (70, 296861), (115, 180698), (161, 129070), (230, 90349), (322, 64535), (805, 25814), (1610, 12907)]