21045340

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{6301}}^1$

素因数の和:6477

約数の個数: 24

約数和(自身を含む): 44466912

約数和(自身を除く): 23421572

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 6301, 12602, 25204, 31505, 63010, 126020, 1052267, 2104534, 4209068, 5261335, 10522670, 21045340]

約数ペア:

[(1, 21045340), (2, 10522670), (4, 5261335), (5, 4209068), (10, 2104534), (20, 1052267), (167, 126020), (334, 63010), (668, 31505), (835, 25204), (1670, 12602), (3340, 6301)]