12813800

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 30206400

約数和(自身を除く): 17392600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 811, 1580, 1622, 1975, 3160, 3244, 3950, 4055, 6488, 7900, 8110, 15800, 16220, 20275, 32440, 40550, 64069, 81100, 128138, 162200, 256276, 320345, 512552, 640690, 1281380, 1601725, 2562760, 3203450, 6406900, 12813800]

約数ペア:

[(1, 12813800), (2, 6406900), (4, 3203450), (5, 2562760), (8, 1601725), (10, 1281380), (20, 640690), (25, 512552), (40, 320345), (50, 256276), (79, 162200), (100, 128138), (158, 81100), (200, 64069), (316, 40550), (395, 32440), (632, 20275), (790, 16220), (811, 15800), (1580, 8110), (1622, 7900), (1975, 6488), (3160, 4055), (3244, 3950)]