21519736

素因数分解:

$2^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1531}}^1$

素因数の和:1795

約数の個数: 32

約数和(自身を含む): 46327680

約数和(自身を除く): 24807944

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 251, 502, 1004, 1531, 1757, 2008, 3062, 3514, 6124, 7028, 10717, 12248, 14056, 21434, 42868, 85736, 384281, 768562, 1537124, 2689967, 3074248, 5379934, 10759868, 21519736]

約数ペア:

[(1, 21519736), (2, 10759868), (4, 5379934), (7, 3074248), (8, 2689967), (14, 1537124), (28, 768562), (56, 384281), (251, 85736), (502, 42868), (1004, 21434), (1531, 14056), (1757, 12248), (2008, 10717), (3062, 7028), (3514, 6124)]