19646980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6257}}^1$

素因数の和:6423

約数の個数: 24

約数和(自身を含む): 41528088

約数和(自身を除く): 21881108

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6257, 12514, 25028, 31285, 62570, 125140, 982349, 1964698, 3929396, 4911745, 9823490, 19646980]

約数ペア:

[(1, 19646980), (2, 9823490), (4, 4911745), (5, 3929396), (10, 1964698), (20, 982349), (157, 125140), (314, 62570), (628, 31285), (785, 25028), (1570, 12514), (3140, 6257)]