21951860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156799}}^1$

素因数の和:156815

約数の個数: 24

約数和(自身を含む): 52684800

約数和(自身を除く): 30732940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156799, 313598, 627196, 783995, 1097593, 1567990, 2195186, 3135980, 4390372, 5487965, 10975930, 21951860]

約数ペア:

[(1, 21951860), (2, 10975930), (4, 5487965), (5, 4390372), (7, 3135980), (10, 2195186), (14, 1567990), (20, 1097593), (28, 783995), (35, 627196), (70, 313598), (140, 156799)]