28291340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18371}}^1$

素因数の和:18398

約数の個数: 48

約数和(自身を含む): 74075904

約数和(自身を除く): 45784564

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, 18371, 36742, 73484, 91855, 128597, 183710, 202081, 257194, 367420, 404162, 514388, 642985, 808324, 1010405, 1285970, 1414567, 2020810, 2571940, 2829134, 4041620, 5658268, 7072835, 14145670, 28291340]

約数ペア:

[(1, 28291340), (2, 14145670), (4, 7072835), (5, 5658268), (7, 4041620), (10, 2829134), (11, 2571940), (14, 2020810), (20, 1414567), (22, 1285970), (28, 1010405), (35, 808324), (44, 642985), (55, 514388), (70, 404162), (77, 367420), (110, 257194), (140, 202081), (154, 183710), (220, 128597), (308, 91855), (385, 73484), (770, 36742), (1540, 18371)]