21155350

素因数分解:

$2^1\times 5^2\times {\mathrm{523}}^1\times {\mathrm{809}}^1$

素因数の和:1344

約数の個数: 24

約数和(自身を含む): 39472920

約数和(自身を除く): 18317570

約数列:

[1, 2, 5, 10, 25, 50, 523, 809, 1046, 1618, 2615, 4045, 5230, 8090, 13075, 20225, 26150, 40450, 423107, 846214, 2115535, 4231070, 10577675, 21155350]

約数ペア:

[(1, 21155350), (2, 10577675), (5, 4231070), (10, 2115535), (25, 846214), (50, 423107), (523, 40450), (809, 26150), (1046, 20225), (1618, 13075), (2615, 8090), (4045, 5230)]