21181250

素因数分解:

$2^1\times 5^5\times {\mathrm{3389}}^1$

素因数の和:3416

約数の個数: 24

約数和(自身を含む): 39724020

約数和(自身を除く): 18542770

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 3125, 3389, 6250, 6778, 16945, 33890, 84725, 169450, 423625, 847250, 2118125, 4236250, 10590625, 21181250]

約数ペア:

[(1, 21181250), (2, 10590625), (5, 4236250), (10, 2118125), (25, 847250), (50, 423625), (125, 169450), (250, 84725), (625, 33890), (1250, 16945), (3125, 6778), (3389, 6250)]