128866900

素因数分解:

$2^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 287759360

約数和(自身を除く): 158892460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 73, 100, 127, 139, 146, 254, 278, 292, 365, 508, 556, 635, 695, 730, 1270, 1390, 1460, 1825, 2540, 2780, 3175, 3475, 3650, 6350, 6950, 7300, 9271, 10147, 12700, 13900, 17653, 18542, 20294, 35306, 37084, 40588, 46355, 50735, 70612, 88265, 92710, 101470, 176530, 185420, 202940, 231775, 253675, 353060, 441325, 463550, 507350, 882650, 927100, 1014700, 1288669, 1765300, 2577338, 5154676, 6443345, 12886690, 25773380, 32216725, 64433450, 128866900]

約数ペア:

[(1, 128866900), (2, 64433450), (4, 32216725), (5, 25773380), (10, 12886690), (20, 6443345), (25, 5154676), (50, 2577338), (73, 1765300), (100, 1288669), (127, 1014700), (139, 927100), (146, 882650), (254, 507350), (278, 463550), (292, 441325), (365, 353060), (508, 253675), (556, 231775), (635, 202940), (695, 185420), (730, 176530), (1270, 101470), (1390, 92710), (1460, 88265), (1825, 70612), (2540, 50735), (2780, 46355), (3175, 40588), (3475, 37084), (3650, 35306), (6350, 20294), (6950, 18542), (7300, 17653), (9271, 13900), (10147, 12700)]