28785820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1619}}^1$

素因数の和:1762

約数の個数: 48

約数和(自身を含む): 69672960

約数和(自身を除く): 40887140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 508, 635, 889, 1270, 1619, 1778, 2540, 3238, 3556, 4445, 6476, 8095, 8890, 11333, 16190, 17780, 22666, 32380, 45332, 56665, 113330, 205613, 226660, 411226, 822452, 1028065, 1439291, 2056130, 2878582, 4112260, 5757164, 7196455, 14392910, 28785820]

約数ペア:

[(1, 28785820), (2, 14392910), (4, 7196455), (5, 5757164), (7, 4112260), (10, 2878582), (14, 2056130), (20, 1439291), (28, 1028065), (35, 822452), (70, 411226), (127, 226660), (140, 205613), (254, 113330), (508, 56665), (635, 45332), (889, 32380), (1270, 22666), (1619, 17780), (1778, 16190), (2540, 11333), (3238, 8890), (3556, 8095), (4445, 6476)]