21693520

素因数分解:

$2^4\times 5^1\times {\mathrm{271169}}^1$

素因数の和:271182

約数の個数: 20

約数和(自身を含む): 50437620

約数和(自身を除く): 28744100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271169, 542338, 1084676, 1355845, 2169352, 2711690, 4338704, 5423380, 10846760, 21693520]

約数ペア:

[(1, 21693520), (2, 10846760), (4, 5423380), (5, 4338704), (8, 2711690), (10, 2169352), (16, 1355845), (20, 1084676), (40, 542338), (80, 271169)]