21439952

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9781}}^1$

素因数の和:9926

約数の個数: 20

約数和(自身を含む): 41847396

約数和(自身を除く): 20407444

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9781, 19562, 39124, 78248, 156496, 1339997, 2679994, 5359988, 10719976, 21439952]

約数ペア:

[(1, 21439952), (2, 10719976), (4, 5359988), (8, 2679994), (16, 1339997), (137, 156496), (274, 78248), (548, 39124), (1096, 19562), (2192, 9781)]