245151340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{3361}}^1$

素因数の和:3898

約数の個数: 48

約数和(自身を含む): 589667904

約数和(自身を除く): 344516564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 521, 1042, 2084, 2605, 3361, 3647, 5210, 6722, 7294, 10420, 13444, 14588, 16805, 18235, 23527, 33610, 36470, 47054, 67220, 72940, 94108, 117635, 235270, 470540, 1751081, 3502162, 7004324, 8755405, 12257567, 17510810, 24515134, 35021620, 49030268, 61287835, 122575670, 245151340]

約数ペア:

[(1, 245151340), (2, 122575670), (4, 61287835), (5, 49030268), (7, 35021620), (10, 24515134), (14, 17510810), (20, 12257567), (28, 8755405), (35, 7004324), (70, 3502162), (140, 1751081), (521, 470540), (1042, 235270), (2084, 117635), (2605, 94108), (3361, 72940), (3647, 67220), (5210, 47054), (6722, 36470), (7294, 33610), (10420, 23527), (13444, 18235), (14588, 16805)]