18991180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73043}}^1$

素因数の和:73065

約数の個数: 24

約数和(自身を含む): 42949872

約数和(自身を除く): 23958692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 73043, 146086, 292172, 365215, 730430, 949559, 1460860, 1899118, 3798236, 4747795, 9495590, 18991180]

約数ペア:

[(1, 18991180), (2, 9495590), (4, 4747795), (5, 3798236), (10, 1899118), (13, 1460860), (20, 949559), (26, 730430), (52, 365215), (65, 292172), (130, 146086), (260, 73043)]