557189840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{563}}^1$

素因数の和:804

約数の個数: 80

約数和(自身を含む): 1321790400

約数和(自身を除く): 764600560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 139, 178, 278, 356, 445, 556, 563, 695, 712, 890, 1112, 1126, 1390, 1424, 1780, 2224, 2252, 2780, 2815, 3560, 4504, 5560, 5630, 7120, 9008, 11120, 11260, 12371, 22520, 24742, 45040, 49484, 50107, 61855, 78257, 98968, 100214, 123710, 156514, 197936, 200428, 247420, 250535, 313028, 391285, 400856, 494840, 501070, 626056, 782570, 801712, 989680, 1002140, 1252112, 1565140, 2004280, 3130280, 4008560, 6260560, 6964873, 13929746, 27859492, 34824365, 55718984, 69648730, 111437968, 139297460, 278594920, 557189840]

約数ペア:

[(1, 557189840), (2, 278594920), (4, 139297460), (5, 111437968), (8, 69648730), (10, 55718984), (16, 34824365), (20, 27859492), (40, 13929746), (80, 6964873), (89, 6260560), (139, 4008560), (178, 3130280), (278, 2004280), (356, 1565140), (445, 1252112), (556, 1002140), (563, 989680), (695, 801712), (712, 782570), (890, 626056), (1112, 501070), (1126, 494840), (1390, 400856), (1424, 391285), (1780, 313028), (2224, 250535), (2252, 247420), (2780, 200428), (2815, 197936), (3560, 156514), (4504, 123710), (5560, 100214), (5630, 98968), (7120, 78257), (9008, 61855), (11120, 50107), (11260, 49484), (12371, 45040), (22520, 24742)]