21198680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27893}}^1$

素因数の和:27923

約数の個数: 32

約数和(自身を含む): 50209200

約数和(自身を除く): 29010520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27893, 55786, 111572, 139465, 223144, 278930, 529967, 557860, 1059934, 1115720, 2119868, 2649835, 4239736, 5299670, 10599340, 21198680]

約数ペア:

[(1, 21198680), (2, 10599340), (4, 5299670), (5, 4239736), (8, 2649835), (10, 2119868), (19, 1115720), (20, 1059934), (38, 557860), (40, 529967), (76, 278930), (95, 223144), (152, 139465), (190, 111572), (380, 55786), (760, 27893)]