20276980

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1567}}^1$

素因数の和:2223

約数の個数: 24

約数和(自身を含む): 42674688

約数和(自身を除く): 22397708

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1567, 2588, 3134, 3235, 6268, 6470, 7835, 12940, 15670, 31340, 1013849, 2027698, 4055396, 5069245, 10138490, 20276980]

約数ペア:

[(1, 20276980), (2, 10138490), (4, 5069245), (5, 4055396), (10, 2027698), (20, 1013849), (647, 31340), (1294, 15670), (1567, 12940), (2588, 7835), (3134, 6470), (3235, 6268)]