84090400

素因数分解:

$2^5\times 5^2\times {\mathrm{257}}^1\times {\mathrm{409}}^1$

素因数の和:686

約数の個数: 72

約数和(自身を含む): 206588340

約数和(自身を除く): 122497940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 257, 400, 409, 514, 800, 818, 1028, 1285, 1636, 2045, 2056, 2570, 3272, 4090, 4112, 5140, 6425, 6544, 8180, 8224, 10225, 10280, 12850, 13088, 16360, 20450, 20560, 25700, 32720, 40900, 41120, 51400, 65440, 81800, 102800, 105113, 163600, 205600, 210226, 327200, 420452, 525565, 840904, 1051130, 1681808, 2102260, 2627825, 3363616, 4204520, 5255650, 8409040, 10511300, 16818080, 21022600, 42045200, 84090400]

約数ペア:

[(1, 84090400), (2, 42045200), (4, 21022600), (5, 16818080), (8, 10511300), (10, 8409040), (16, 5255650), (20, 4204520), (25, 3363616), (32, 2627825), (40, 2102260), (50, 1681808), (80, 1051130), (100, 840904), (160, 525565), (200, 420452), (257, 327200), (400, 210226), (409, 205600), (514, 163600), (800, 105113), (818, 102800), (1028, 81800), (1285, 65440), (1636, 51400), (2045, 41120), (2056, 40900), (2570, 32720), (3272, 25700), (4090, 20560), (4112, 20450), (5140, 16360), (6425, 13088), (6544, 12850), (8180, 10280), (8224, 10225)]