25471880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{90971}}^1$

素因数の和:90989

約数の個数: 32

約数和(自身を含む): 65499840

約数和(自身を除く): 40027960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 90971, 181942, 363884, 454855, 636797, 727768, 909710, 1273594, 1819420, 2547188, 3183985, 3638840, 5094376, 6367970, 12735940, 25471880]

約数ペア:

[(1, 25471880), (2, 12735940), (4, 6367970), (5, 5094376), (7, 3638840), (8, 3183985), (10, 2547188), (14, 1819420), (20, 1273594), (28, 909710), (35, 727768), (40, 636797), (56, 454855), (70, 363884), (140, 181942), (280, 90971)]