21750378

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{349}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29052822

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 47, 51, 78, 94, 102, 141, 221, 282, 349, 442, 611, 663, 698, 799, 1047, 1222, 1326, 1598, 1833, 2094, 2397, 3666, 4537, 4794, 5933, 9074, 10387, 11866, 13611, 16403, 17799, 20774, 27222, 31161, 32806, 35598, 49209, 62322, 77129, 98418, 154258, 213239, 231387, 278851, 426478, 462774, 557702, 639717, 836553, 1279434, 1673106, 3625063, 7250126, 10875189, 21750378]

約数ペア:

[(1, 21750378), (2, 10875189), (3, 7250126), (6, 3625063), (13, 1673106), (17, 1279434), (26, 836553), (34, 639717), (39, 557702), (47, 462774), (51, 426478), (78, 278851), (94, 231387), (102, 213239), (141, 154258), (221, 98418), (282, 77129), (349, 62322), (442, 49209), (611, 35598), (663, 32806), (698, 31161), (799, 27222), (1047, 20774), (1222, 17799), (1326, 16403), (1598, 13611), (1833, 11866), (2094, 10387), (2397, 9074), (3666, 5933), (4537, 4794)]