64005520

素因数分解:

$2^4\times 5^1\times {\mathrm{379}}^1\times {\mathrm{2111}}^1$

素因数の和:2503

約数の個数: 40

約数和(自身を含む): 149276160

約数和(自身を除く): 85270640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 379, 758, 1516, 1895, 2111, 3032, 3790, 4222, 6064, 7580, 8444, 10555, 15160, 16888, 21110, 30320, 33776, 42220, 84440, 168880, 800069, 1600138, 3200276, 4000345, 6400552, 8000690, 12801104, 16001380, 32002760, 64005520]

約数ペア:

[(1, 64005520), (2, 32002760), (4, 16001380), (5, 12801104), (8, 8000690), (10, 6400552), (16, 4000345), (20, 3200276), (40, 1600138), (80, 800069), (379, 168880), (758, 84440), (1516, 42220), (1895, 33776), (2111, 30320), (3032, 21110), (3790, 16888), (4222, 15160), (6064, 10555), (7580, 8444)]