18912740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12281}}^1$

素因数の和:12308

約数の個数: 48

約数和(自身を含む): 49521024

約数和(自身を除く): 30608284

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12281, 24562, 49124, 61405, 85967, 122810, 135091, 171934, 245620, 270182, 343868, 429835, 540364, 675455, 859670, 945637, 1350910, 1719340, 1891274, 2701820, 3782548, 4728185, 9456370, 18912740]

約数ペア:

[(1, 18912740), (2, 9456370), (4, 4728185), (5, 3782548), (7, 2701820), (10, 1891274), (11, 1719340), (14, 1350910), (20, 945637), (22, 859670), (28, 675455), (35, 540364), (44, 429835), (55, 343868), (70, 270182), (77, 245620), (110, 171934), (140, 135091), (154, 122810), (220, 85967), (308, 61405), (385, 49124), (770, 24562), (1540, 12281)]