856240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1$

素因数の和:170

約数の個数: 80

約数和(自身を含む): 2499840

約数和(自身を除く): 1643600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 139, 140, 154, 176, 220, 278, 280, 308, 385, 440, 556, 560, 616, 695, 770, 880, 973, 1112, 1232, 1390, 1529, 1540, 1946, 2224, 2780, 3058, 3080, 3892, 4865, 5560, 6116, 6160, 7645, 7784, 9730, 10703, 11120, 12232, 15290, 15568, 19460, 21406, 24464, 30580, 38920, 42812, 53515, 61160, 77840, 85624, 107030, 122320, 171248, 214060, 428120, 856240]

約数ペア:

[(1, 856240), (2, 428120), (4, 214060), (5, 171248), (7, 122320), (8, 107030), (10, 85624), (11, 77840), (14, 61160), (16, 53515), (20, 42812), (22, 38920), (28, 30580), (35, 24464), (40, 21406), (44, 19460), (55, 15568), (56, 15290), (70, 12232), (77, 11120), (80, 10703), (88, 9730), (110, 7784), (112, 7645), (139, 6160), (140, 6116), (154, 5560), (176, 4865), (220, 3892), (278, 3080), (280, 3058), (308, 2780), (385, 2224), (440, 1946), (556, 1540), (560, 1529), (616, 1390), (695, 1232), (770, 1112), (880, 973)]