81805724

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20431}}^1$

素因数の和:20466

約数の個数: 48

約数和(自身を含む): 192224256

約数和(自身を除く): 110418532

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 20431, 40862, 81724, 143017, 224741, 265603, 286034, 449482, 531206, 572068, 898964, 1062412, 1573187, 1859221, 2921633, 3146374, 3718442, 5843266, 6292748, 7436884, 11686532, 20451431, 40902862, 81805724]

約数ペア:

[(1, 81805724), (2, 40902862), (4, 20451431), (7, 11686532), (11, 7436884), (13, 6292748), (14, 5843266), (22, 3718442), (26, 3146374), (28, 2921633), (44, 1859221), (52, 1573187), (77, 1062412), (91, 898964), (143, 572068), (154, 531206), (182, 449482), (286, 286034), (308, 265603), (364, 224741), (572, 143017), (1001, 81724), (2002, 40862), (4004, 20431)]