21203450

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{2131}}^1$

素因数の和:2342

約数の個数: 24

約数和(自身を含む): 39655200

約数和(自身を除く): 18451750

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 2131, 4262, 4975, 9950, 10655, 21310, 53275, 106550, 424069, 848138, 2120345, 4240690, 10601725, 21203450]

約数ペア:

[(1, 21203450), (2, 10601725), (5, 4240690), (10, 2120345), (25, 848138), (50, 424069), (199, 106550), (398, 53275), (995, 21310), (1990, 10655), (2131, 9950), (4262, 4975)]