2780495440

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{53719}}^1$

素因数の和:54379

約数の個数: 40

約数和(自身を含む): 6474764160

約数和(自身を除く): 3694268720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 25880, 51760, 53719, 107438, 214876, 268595, 429752, 537190, 859504, 1074380, 2148760, 4297520, 34756193, 69512386, 139024772, 173780965, 278049544, 347561930, 556099088, 695123860, 1390247720, 2780495440]

約数ペア:

[(1, 2780495440), (2, 1390247720), (4, 695123860), (5, 556099088), (8, 347561930), (10, 278049544), (16, 173780965), (20, 139024772), (40, 69512386), (80, 34756193), (647, 4297520), (1294, 2148760), (2588, 1074380), (3235, 859504), (5176, 537190), (6470, 429752), (10352, 268595), (12940, 214876), (25880, 107438), (51760, 53719)]