28400480

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1277}}^1$

素因数の和:1431

約数の個数: 48

約数和(自身を含む): 67631760

約数和(自身を除く): 39231280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1277, 1390, 2224, 2554, 2780, 4448, 5108, 5560, 6385, 10216, 11120, 12770, 20432, 22240, 25540, 40864, 51080, 102160, 177503, 204320, 355006, 710012, 887515, 1420024, 1775030, 2840048, 3550060, 5680096, 7100120, 14200240, 28400480]

約数ペア:

[(1, 28400480), (2, 14200240), (4, 7100120), (5, 5680096), (8, 3550060), (10, 2840048), (16, 1775030), (20, 1420024), (32, 887515), (40, 710012), (80, 355006), (139, 204320), (160, 177503), (278, 102160), (556, 51080), (695, 40864), (1112, 25540), (1277, 22240), (1390, 20432), (2224, 12770), (2554, 11120), (2780, 10216), (4448, 6385), (5108, 5560)]