20013994

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{769}}^1$

素因数の和:815

約数の個数: 48

約数和(自身を含む): 40582080

約数和(自身を除く): 20568086

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 143, 154, 169, 182, 286, 338, 769, 1001, 1183, 1538, 1859, 2002, 2366, 3718, 5383, 8459, 9997, 10766, 13013, 16918, 19994, 26026, 59213, 69979, 109967, 118426, 129961, 139958, 219934, 259922, 769769, 909727, 1429571, 1539538, 1819454, 2859142, 10006997, 20013994]

約数ペア:

[(1, 20013994), (2, 10006997), (7, 2859142), (11, 1819454), (13, 1539538), (14, 1429571), (22, 909727), (26, 769769), (77, 259922), (91, 219934), (143, 139958), (154, 129961), (169, 118426), (182, 109967), (286, 69979), (338, 59213), (769, 26026), (1001, 19994), (1183, 16918), (1538, 13013), (1859, 10766), (2002, 9997), (2366, 8459), (3718, 5383)]