20511952

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:571

約数の個数: 40

約数和(自身を含む): 41872320

約数和(自身を除く): 21360368

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 139, 184, 278, 368, 401, 556, 802, 1112, 1604, 2224, 3197, 3208, 6394, 6416, 9223, 12788, 18446, 25576, 36892, 51152, 55739, 73784, 111478, 147568, 222956, 445912, 891824, 1281997, 2563994, 5127988, 10255976, 20511952]

約数ペア:

[(1, 20511952), (2, 10255976), (4, 5127988), (8, 2563994), (16, 1281997), (23, 891824), (46, 445912), (92, 222956), (139, 147568), (184, 111478), (278, 73784), (368, 55739), (401, 51152), (556, 36892), (802, 25576), (1112, 18446), (1604, 12788), (2224, 9223), (3197, 6416), (3208, 6394)]