18722860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{673}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 42801696

約数和(自身を除く): 24078836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 673, 1070, 1346, 1391, 2140, 2692, 2782, 3365, 5564, 6730, 6955, 8749, 13460, 13910, 17498, 27820, 34996, 43745, 72011, 87490, 144022, 174980, 288044, 360055, 720110, 936143, 1440220, 1872286, 3744572, 4680715, 9361430, 18722860]

約数ペア:

[(1, 18722860), (2, 9361430), (4, 4680715), (5, 3744572), (10, 1872286), (13, 1440220), (20, 936143), (26, 720110), (52, 360055), (65, 288044), (107, 174980), (130, 144022), (214, 87490), (260, 72011), (428, 43745), (535, 34996), (673, 27820), (1070, 17498), (1346, 13910), (1391, 13460), (2140, 8749), (2692, 6955), (2782, 6730), (3365, 5564)]