20178441680

素因数分解:

$2^4\times 5^1\times {\mathrm{252230521}}^1$

素因数の和:252230534

約数の個数: 20

約数和(自身を含む): 46914877092

約数和(自身を除く): 26736435412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252230521, 504461042, 1008922084, 1261152605, 2017844168, 2522305210, 4035688336, 5044610420, 10089220840, 20178441680]

約数ペア:

[(1, 20178441680), (2, 10089220840), (4, 5044610420), (5, 4035688336), (8, 2522305210), (10, 2017844168), (16, 1261152605), (20, 1008922084), (40, 504461042), (80, 252230521)]