20954008

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 40950000

約数和(自身を除く): 19995992

約数列:

[1, 2, 4, 8, 29, 58, 116, 181, 232, 362, 499, 724, 998, 1448, 1996, 3992, 5249, 10498, 14471, 20996, 28942, 41992, 57884, 90319, 115768, 180638, 361276, 722552, 2619251, 5238502, 10477004, 20954008]

約数ペア:

[(1, 20954008), (2, 10477004), (4, 5238502), (8, 2619251), (29, 722552), (58, 361276), (116, 180638), (181, 115768), (232, 90319), (362, 57884), (499, 41992), (724, 28942), (998, 20996), (1448, 14471), (1996, 10498), (3992, 5249)]