18811780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72353}}^1$

素因数の和:72375

約数の個数: 24

約数和(自身を含む): 42544152

約数和(自身を除く): 23732372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72353, 144706, 289412, 361765, 723530, 940589, 1447060, 1881178, 3762356, 4702945, 9405890, 18811780]

約数ペア:

[(1, 18811780), (2, 9405890), (4, 4702945), (5, 3762356), (10, 1881178), (13, 1447060), (20, 940589), (26, 723530), (52, 361765), (65, 289412), (130, 144706), (260, 72353)]