20945830

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72227}}^1$

素因数の和:72263

約数の個数: 16

約数和(自身を含む): 39003120

約数和(自身を除く): 18057290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72227, 144454, 361135, 722270, 2094583, 4189166, 10472915, 20945830]

約数ペア:

[(1, 20945830), (2, 10472915), (5, 4189166), (10, 2094583), (29, 722270), (58, 361135), (145, 144454), (290, 72227)]