20178651890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{997}}^1\times {\mathrm{2879}}^1$

素因数の和:3939

約数の個数: 64

約数和(自身を含む): 39319603200

約数和(自身を除く): 19140951310

約数列:

[1, 2, 5, 10, 19, 37, 38, 74, 95, 185, 190, 370, 703, 997, 1406, 1994, 2879, 3515, 4985, 5758, 7030, 9970, 14395, 18943, 28790, 36889, 37886, 54701, 73778, 94715, 106523, 109402, 184445, 189430, 213046, 273505, 368890, 532615, 547010, 700891, 1065230, 1401782, 2023937, 2870363, 3504455, 4047874, 5740726, 7008910, 10119685, 14351815, 20239370, 28703630, 54536897, 106203431, 109073794, 212406862, 272684485, 531017155, 545368970, 1062034310, 2017865189, 4035730378, 10089325945, 20178651890]

約数ペア:

[(1, 20178651890), (2, 10089325945), (5, 4035730378), (10, 2017865189), (19, 1062034310), (37, 545368970), (38, 531017155), (74, 272684485), (95, 212406862), (185, 109073794), (190, 106203431), (370, 54536897), (703, 28703630), (997, 20239370), (1406, 14351815), (1994, 10119685), (2879, 7008910), (3515, 5740726), (4985, 4047874), (5758, 3504455), (7030, 2870363), (9970, 2023937), (14395, 1401782), (18943, 1065230), (28790, 700891), (36889, 547010), (37886, 532615), (54701, 368890), (73778, 273505), (94715, 213046), (106523, 189430), (109402, 184445)]