20389968160

素因数分解:

$2^5\times 5^1\times {\mathrm{191}}^1\times {\mathrm{667211}}^1$

素因数の和:667417

約数の個数: 48

約数和(自身を含む): 48423578112

約数和(自身を除く): 28033609952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 191, 382, 764, 955, 1528, 1910, 3056, 3820, 6112, 7640, 15280, 30560, 667211, 1334422, 2668844, 3336055, 5337688, 6672110, 10675376, 13344220, 21350752, 26688440, 53376880, 106753760, 127437301, 254874602, 509749204, 637186505, 1019498408, 1274373010, 2038996816, 2548746020, 4077993632, 5097492040, 10194984080, 20389968160]

約数ペア:

[(1, 20389968160), (2, 10194984080), (4, 5097492040), (5, 4077993632), (8, 2548746020), (10, 2038996816), (16, 1274373010), (20, 1019498408), (32, 637186505), (40, 509749204), (80, 254874602), (160, 127437301), (191, 106753760), (382, 53376880), (764, 26688440), (955, 21350752), (1528, 13344220), (1910, 10675376), (3056, 6672110), (3820, 5337688), (6112, 3336055), (7640, 2668844), (15280, 1334422), (30560, 667211)]