18802940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5563}}^1$

素因数の和:5598

約数の個数: 36

約数和(自身を含む): 42764904

約数和(自身を除く): 23961964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5563, 11126, 22252, 27815, 55630, 72319, 111260, 144638, 289276, 361595, 723190, 940147, 1446380, 1880294, 3760588, 4700735, 9401470, 18802940]

約数ペア:

[(1, 18802940), (2, 9401470), (4, 4700735), (5, 3760588), (10, 1880294), (13, 1446380), (20, 940147), (26, 723190), (52, 361595), (65, 289276), (130, 144638), (169, 111260), (260, 72319), (338, 55630), (676, 27815), (845, 22252), (1690, 11126), (3380, 5563)]