20718320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36997}}^1$

素因数の和:37017

約数の個数: 40

約数和(自身を含む): 55053024

約数和(自身を除く): 34334704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36997, 73994, 147988, 184985, 258979, 295976, 369970, 517958, 591952, 739940, 1035916, 1294895, 1479880, 2071832, 2589790, 2959760, 4143664, 5179580, 10359160, 20718320]

約数ペア:

[(1, 20718320), (2, 10359160), (4, 5179580), (5, 4143664), (7, 2959760), (8, 2589790), (10, 2071832), (14, 1479880), (16, 1294895), (20, 1035916), (28, 739940), (35, 591952), (40, 517958), (56, 369970), (70, 295976), (80, 258979), (112, 184985), (140, 147988), (280, 73994), (560, 36997)]