2131540

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{541}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 4507272

約数和(自身を除く): 2375732

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 541, 788, 985, 1082, 1970, 2164, 2705, 3940, 5410, 10820, 106577, 213154, 426308, 532885, 1065770, 2131540]

約数ペア:

[(1, 2131540), (2, 1065770), (4, 532885), (5, 426308), (10, 213154), (20, 106577), (197, 10820), (394, 5410), (541, 3940), (788, 2705), (985, 2164), (1082, 1970)]