80340400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{4099}}^1$

素因数の和:4131

約数の個数: 90

約数和(自身を含む): 224585700

約数和(自身を除く): 144245300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4099, 4900, 8198, 9800, 16396, 19600, 20495, 28693, 32792, 40990, 57386, 65584, 81980, 102475, 114772, 143465, 163960, 200851, 204950, 229544, 286930, 327920, 401702, 409900, 459088, 573860, 717325, 803404, 819800, 1004255, 1147720, 1434650, 1606808, 1639600, 2008510, 2295440, 2869300, 3213616, 4017020, 5021275, 5738600, 8034040, 10042550, 11477200, 16068080, 20085100, 40170200, 80340400]

約数ペア:

[(1, 80340400), (2, 40170200), (4, 20085100), (5, 16068080), (7, 11477200), (8, 10042550), (10, 8034040), (14, 5738600), (16, 5021275), (20, 4017020), (25, 3213616), (28, 2869300), (35, 2295440), (40, 2008510), (49, 1639600), (50, 1606808), (56, 1434650), (70, 1147720), (80, 1004255), (98, 819800), (100, 803404), (112, 717325), (140, 573860), (175, 459088), (196, 409900), (200, 401702), (245, 327920), (280, 286930), (350, 229544), (392, 204950), (400, 200851), (490, 163960), (560, 143465), (700, 114772), (784, 102475), (980, 81980), (1225, 65584), (1400, 57386), (1960, 40990), (2450, 32792), (2800, 28693), (3920, 20495), (4099, 19600), (4900, 16396), (8198, 9800)]