389601500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{18121}}^1$

素因数の和:18183

約数の個数: 48

約数和(自身を含む): 870725856

約数和(自身を除く): 481124356

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 1075, 2150, 4300, 5375, 10750, 18121, 21500, 36242, 72484, 90605, 181210, 362420, 453025, 779203, 906050, 1558406, 1812100, 2265125, 3116812, 3896015, 4530250, 7792030, 9060500, 15584060, 19480075, 38960150, 77920300, 97400375, 194800750, 389601500]

約数ペア:

[(1, 389601500), (2, 194800750), (4, 97400375), (5, 77920300), (10, 38960150), (20, 19480075), (25, 15584060), (43, 9060500), (50, 7792030), (86, 4530250), (100, 3896015), (125, 3116812), (172, 2265125), (215, 1812100), (250, 1558406), (430, 906050), (500, 779203), (860, 453025), (1075, 362420), (2150, 181210), (4300, 90605), (5375, 72484), (10750, 36242), (18121, 21500)]