20508544

素因数分解:

$2^7\times 7^1\times {\mathrm{47}}^1\times {\mathrm{487}}^1$

素因数の和:555

約数の個数: 64

約数和(自身を含む): 47784960

約数和(自身を除く): 27276416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 329, 376, 448, 487, 658, 752, 896, 974, 1316, 1504, 1948, 2632, 3008, 3409, 3896, 5264, 6016, 6818, 7792, 10528, 13636, 15584, 21056, 22889, 27272, 31168, 42112, 45778, 54544, 62336, 91556, 109088, 160223, 183112, 218176, 320446, 366224, 436352, 640892, 732448, 1281784, 1464896, 2563568, 2929792, 5127136, 10254272, 20508544]

約数ペア:

[(1, 20508544), (2, 10254272), (4, 5127136), (7, 2929792), (8, 2563568), (14, 1464896), (16, 1281784), (28, 732448), (32, 640892), (47, 436352), (56, 366224), (64, 320446), (94, 218176), (112, 183112), (128, 160223), (188, 109088), (224, 91556), (329, 62336), (376, 54544), (448, 45778), (487, 42112), (658, 31168), (752, 27272), (896, 22889), (974, 21056), (1316, 15584), (1504, 13636), (1948, 10528), (2632, 7792), (3008, 6818), (3409, 6016), (3896, 5264)]