21000852378

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{509}}^1\times {\mathrm{208379}}^1$

素因数の和:208907

約数の個数: 48

約数和(自身を含む): 49736138400

約数和(自身を除く): 28735286022

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 509, 1018, 1527, 3054, 4581, 5599, 9162, 11198, 16797, 33594, 50391, 100782, 208379, 416758, 625137, 1250274, 1875411, 2292169, 3750822, 4584338, 6876507, 13753014, 20629521, 41259042, 106064911, 212129822, 318194733, 636389466, 954584199, 1166714021, 1909168398, 2333428042, 3500142063, 7000284126, 10500426189, 21000852378]

約数ペア:

[(1, 21000852378), (2, 10500426189), (3, 7000284126), (6, 3500142063), (9, 2333428042), (11, 1909168398), (18, 1166714021), (22, 954584199), (33, 636389466), (66, 318194733), (99, 212129822), (198, 106064911), (509, 41259042), (1018, 20629521), (1527, 13753014), (3054, 6876507), (4581, 4584338), (5599, 3750822), (9162, 2292169), (11198, 1875411), (16797, 1250274), (33594, 625137), (50391, 416758), (100782, 208379)]