81841040

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:736

約数の個数: 80

約数和(自身を含む): 200278848

約数和(自身を除く): 118437808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 43, 74, 80, 86, 148, 172, 185, 215, 296, 344, 370, 430, 592, 643, 688, 740, 860, 1286, 1480, 1591, 1720, 2572, 2960, 3182, 3215, 3440, 5144, 6364, 6430, 7955, 10288, 12728, 12860, 15910, 23791, 25456, 25720, 27649, 31820, 47582, 51440, 55298, 63640, 95164, 110596, 118955, 127280, 138245, 190328, 221192, 237910, 276490, 380656, 442384, 475820, 552980, 951640, 1023013, 1105960, 1903280, 2046026, 2211920, 4092052, 5115065, 8184104, 10230130, 16368208, 20460260, 40920520, 81841040]

約数ペア:

[(1, 81841040), (2, 40920520), (4, 20460260), (5, 16368208), (8, 10230130), (10, 8184104), (16, 5115065), (20, 4092052), (37, 2211920), (40, 2046026), (43, 1903280), (74, 1105960), (80, 1023013), (86, 951640), (148, 552980), (172, 475820), (185, 442384), (215, 380656), (296, 276490), (344, 237910), (370, 221192), (430, 190328), (592, 138245), (643, 127280), (688, 118955), (740, 110596), (860, 95164), (1286, 63640), (1480, 55298), (1591, 51440), (1720, 47582), (2572, 31820), (2960, 27649), (3182, 25720), (3215, 25456), (3440, 23791), (5144, 15910), (6364, 12860), (6430, 12728), (7955, 10288)]