39891964

素因数分解:

$2^2\times 7^1\times {\mathrm{997}}^1\times {\mathrm{1429}}^1$

素因数の和:2437

約数の個数: 24

約数和(自身を含む): 79919840

約数和(自身を除く): 40027876

約数列:

[1, 2, 4, 7, 14, 28, 997, 1429, 1994, 2858, 3988, 5716, 6979, 10003, 13958, 20006, 27916, 40012, 1424713, 2849426, 5698852, 9972991, 19945982, 39891964]

約数ペア:

[(1, 39891964), (2, 19945982), (4, 9972991), (7, 5698852), (14, 2849426), (28, 1424713), (997, 40012), (1429, 27916), (1994, 20006), (2858, 13958), (3988, 10003), (5716, 6979)]