21217750

素因数分解:

$2^1\times 5^3\times {\mathrm{84871}}^1$

素因数の和:84888

約数の個数: 16

約数和(自身を含む): 39720096

約数和(自身を除く): 18502346

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 84871, 169742, 424355, 848710, 2121775, 4243550, 10608875, 21217750]

約数ペア:

[(1, 21217750), (2, 10608875), (5, 4243550), (10, 2121775), (25, 848710), (50, 424355), (125, 169742), (250, 84871)]