80981900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 185040240

約数和(自身を除く): 104058340

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 43, 50, 74, 86, 100, 148, 172, 185, 215, 370, 430, 509, 740, 860, 925, 1018, 1075, 1591, 1850, 2036, 2150, 2545, 3182, 3700, 4300, 5090, 6364, 7955, 10180, 12725, 15910, 18833, 21887, 25450, 31820, 37666, 39775, 43774, 50900, 75332, 79550, 87548, 94165, 109435, 159100, 188330, 218870, 376660, 437740, 470825, 547175, 809819, 941650, 1094350, 1619638, 1883300, 2188700, 3239276, 4049095, 8098190, 16196380, 20245475, 40490950, 80981900]

約数ペア:

[(1, 80981900), (2, 40490950), (4, 20245475), (5, 16196380), (10, 8098190), (20, 4049095), (25, 3239276), (37, 2188700), (43, 1883300), (50, 1619638), (74, 1094350), (86, 941650), (100, 809819), (148, 547175), (172, 470825), (185, 437740), (215, 376660), (370, 218870), (430, 188330), (509, 159100), (740, 109435), (860, 94165), (925, 87548), (1018, 79550), (1075, 75332), (1591, 50900), (1850, 43774), (2036, 39775), (2150, 37666), (2545, 31820), (3182, 25450), (3700, 21887), (4300, 18833), (5090, 15910), (6364, 12725), (7955, 10180)]