21203750

素因数分解:

$2^1\times 5^4\times {\mathrm{16963}}^1$

素因数の和:16985

約数の個数: 20

約数和(自身を含む): 39746652

約数和(自身を除く): 18542902

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 16963, 33926, 84815, 169630, 424075, 848150, 2120375, 4240750, 10601875, 21203750]

約数ペア:

[(1, 21203750), (2, 10601875), (5, 4240750), (10, 2120375), (25, 848150), (50, 424075), (125, 169630), (250, 84815), (625, 33926), (1250, 16963)]