20386656

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{997}}^1$

素因数の和:1084

約数の個数: 72

約数和(自身を含む): 58850064

約数和(自身を除く): 38463408

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 142, 144, 213, 284, 288, 426, 568, 639, 852, 997, 1136, 1278, 1704, 1994, 2272, 2556, 2991, 3408, 3988, 5112, 5982, 6816, 7976, 8973, 10224, 11964, 15952, 17946, 20448, 23928, 31904, 35892, 47856, 70787, 71784, 95712, 141574, 143568, 212361, 283148, 287136, 424722, 566296, 637083, 849444, 1132592, 1274166, 1698888, 2265184, 2548332, 3397776, 5096664, 6795552, 10193328, 20386656]

約数ペア:

[(1, 20386656), (2, 10193328), (3, 6795552), (4, 5096664), (6, 3397776), (8, 2548332), (9, 2265184), (12, 1698888), (16, 1274166), (18, 1132592), (24, 849444), (32, 637083), (36, 566296), (48, 424722), (71, 287136), (72, 283148), (96, 212361), (142, 143568), (144, 141574), (213, 95712), (284, 71784), (288, 70787), (426, 47856), (568, 35892), (639, 31904), (852, 23928), (997, 20448), (1136, 17946), (1278, 15952), (1704, 11964), (1994, 10224), (2272, 8973), (2556, 7976), (2991, 6816), (3408, 5982), (3988, 5112)]