320064080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{81649}}^1$

素因数の和:81676

約数の個数: 60

約数和(自身を含む): 865653300

約数和(自身を除く): 545589220

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 81649, 163298, 326596, 408245, 571543, 653192, 816490, 1143086, 1306384, 1632980, 2286172, 2857715, 3265960, 4000801, 4572344, 5715430, 6531920, 8001602, 9144688, 11430860, 16003204, 20004005, 22861720, 32006408, 40008010, 45723440, 64012816, 80016020, 160032040, 320064080]

約数ペア:

[(1, 320064080), (2, 160032040), (4, 80016020), (5, 64012816), (7, 45723440), (8, 40008010), (10, 32006408), (14, 22861720), (16, 20004005), (20, 16003204), (28, 11430860), (35, 9144688), (40, 8001602), (49, 6531920), (56, 5715430), (70, 4572344), (80, 4000801), (98, 3265960), (112, 2857715), (140, 2286172), (196, 1632980), (245, 1306384), (280, 1143086), (392, 816490), (490, 653192), (560, 571543), (784, 408245), (980, 326596), (1960, 163298), (3920, 81649)]