678478640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{7717}}^1$

素因数の和:7894

約数の個数: 80

約数和(自身を含む): 1814532672

約数和(自身を除く): 1136054032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 157, 280, 314, 560, 628, 785, 1099, 1256, 1570, 2198, 2512, 3140, 4396, 5495, 6280, 7717, 8792, 10990, 12560, 15434, 17584, 21980, 30868, 38585, 43960, 54019, 61736, 77170, 87920, 108038, 123472, 154340, 216076, 270095, 308680, 432152, 540190, 617360, 864304, 1080380, 1211569, 2160760, 2423138, 4321520, 4846276, 6057845, 8480983, 9692552, 12115690, 16961966, 19385104, 24231380, 33923932, 42404915, 48462760, 67847864, 84809830, 96925520, 135695728, 169619660, 339239320, 678478640]

約数ペア:

[(1, 678478640), (2, 339239320), (4, 169619660), (5, 135695728), (7, 96925520), (8, 84809830), (10, 67847864), (14, 48462760), (16, 42404915), (20, 33923932), (28, 24231380), (35, 19385104), (40, 16961966), (56, 12115690), (70, 9692552), (80, 8480983), (112, 6057845), (140, 4846276), (157, 4321520), (280, 2423138), (314, 2160760), (560, 1211569), (628, 1080380), (785, 864304), (1099, 617360), (1256, 540190), (1570, 432152), (2198, 308680), (2512, 270095), (3140, 216076), (4396, 154340), (5495, 123472), (6280, 108038), (7717, 87920), (8792, 77170), (10990, 61736), (12560, 54019), (15434, 43960), (17584, 38585), (21980, 30868)]