20609900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4793}}^1$

素因数の和:4850

約数の個数: 36

約数和(自身を含む): 45773112

約数和(自身を除く): 25163212

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4793, 9586, 19172, 23965, 47930, 95860, 119825, 206099, 239650, 412198, 479300, 824396, 1030495, 2060990, 4121980, 5152475, 10304950, 20609900]

約数ペア:

[(1, 20609900), (2, 10304950), (4, 5152475), (5, 4121980), (10, 2060990), (20, 1030495), (25, 824396), (43, 479300), (50, 412198), (86, 239650), (100, 206099), (172, 119825), (215, 95860), (430, 47930), (860, 23965), (1075, 19172), (2150, 9586), (4300, 4793)]