81755900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{19013}}^1$

素因数の和:19070

約数の個数: 36

約数和(自身を含む): 181545672

約数和(自身を除く): 99789772

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 19013, 38026, 76052, 95065, 190130, 380260, 475325, 817559, 950650, 1635118, 1901300, 3270236, 4087795, 8175590, 16351180, 20438975, 40877950, 81755900]

約数ペア:

[(1, 81755900), (2, 40877950), (4, 20438975), (5, 16351180), (10, 8175590), (20, 4087795), (25, 3270236), (43, 1901300), (50, 1635118), (86, 950650), (100, 817559), (172, 475325), (215, 380260), (430, 190130), (860, 95065), (1075, 76052), (2150, 38026), (4300, 19013)]