21072500

素因数分解:

$2^2\times 5^4\times {\mathrm{8429}}^1$

素因数の和:8453

約数の個数: 30

約数和(自身を含む): 46086810

約数和(自身を除く): 25014310

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8429, 16858, 33716, 42145, 84290, 168580, 210725, 421450, 842900, 1053625, 2107250, 4214500, 5268125, 10536250, 21072500]

約数ペア:

[(1, 21072500), (2, 10536250), (4, 5268125), (5, 4214500), (10, 2107250), (20, 1053625), (25, 842900), (50, 421450), (100, 210725), (125, 168580), (250, 84290), (500, 42145), (625, 33716), (1250, 16858), (2500, 8429)]