19785140

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6301}}^1$

素因数の和:6467

約数の個数: 24

約数和(自身を含む): 41820072

約数和(自身を除く): 22034932

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6301, 12602, 25204, 31505, 63010, 126020, 989257, 1978514, 3957028, 4946285, 9892570, 19785140]

約数ペア:

[(1, 19785140), (2, 9892570), (4, 4946285), (5, 3957028), (10, 1978514), (20, 989257), (157, 126020), (314, 63010), (628, 31505), (785, 25204), (1570, 12602), (3140, 6301)]