20395744

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 41803776

約数和(自身を除く): 21408032

約数列:

[1, 2, 4, 8, 16, 32, 47, 71, 94, 142, 188, 191, 284, 376, 382, 568, 752, 764, 1136, 1504, 1528, 2272, 3056, 3337, 6112, 6674, 8977, 13348, 13561, 17954, 26696, 27122, 35908, 53392, 54244, 71816, 106784, 108488, 143632, 216976, 287264, 433952, 637367, 1274734, 2549468, 5098936, 10197872, 20395744]

約数ペア:

[(1, 20395744), (2, 10197872), (4, 5098936), (8, 2549468), (16, 1274734), (32, 637367), (47, 433952), (71, 287264), (94, 216976), (142, 143632), (188, 108488), (191, 106784), (284, 71816), (376, 54244), (382, 53392), (568, 35908), (752, 27122), (764, 26696), (1136, 17954), (1504, 13561), (1528, 13348), (2272, 8977), (3056, 6674), (3337, 6112)]