19159780

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2389}}^1$

素因数の和:2799

約数の個数: 24

約数和(自身を含む): 40352760

約数和(自身を除く): 21192980

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2389, 4010, 4778, 8020, 9556, 11945, 23890, 47780, 957989, 1915978, 3831956, 4789945, 9579890, 19159780]

約数ペア:

[(1, 19159780), (2, 9579890), (4, 4789945), (5, 3831956), (10, 1915978), (20, 957989), (401, 47780), (802, 23890), (1604, 11945), (2005, 9556), (2389, 8020), (4010, 4778)]