20287784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{5623}}^1$

素因数の和:5681

約数の個数: 32

約数和(自身を含む): 42517440

約数和(自身を除く): 22229656

約数列:

[1, 2, 4, 8, 11, 22, 41, 44, 82, 88, 164, 328, 451, 902, 1804, 3608, 5623, 11246, 22492, 44984, 61853, 123706, 230543, 247412, 461086, 494824, 922172, 1844344, 2535973, 5071946, 10143892, 20287784]

約数ペア:

[(1, 20287784), (2, 10143892), (4, 5071946), (8, 2535973), (11, 1844344), (22, 922172), (41, 494824), (44, 461086), (82, 247412), (88, 230543), (164, 123706), (328, 61853), (451, 44984), (902, 22492), (1804, 11246), (3608, 5623)]