21311560

素因数分解:

$2^3\times 5^1\times {\mathrm{532789}}^1$

素因数の和:532800

約数の個数: 16

約数和(自身を含む): 47951100

約数和(自身を除く): 26639540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532789, 1065578, 2131156, 2663945, 4262312, 5327890, 10655780, 21311560]

約数ペア:

[(1, 21311560), (2, 10655780), (4, 5327890), (5, 4262312), (8, 2663945), (10, 2131156), (20, 1065578), (40, 532789)]