21939910

素因数分解:

$2^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{8741}}^1$

素因数の和:8999

約数の個数: 16

約数和(自身を含む): 39653712

約数和(自身を除く): 17713802

約数列:

[1, 2, 5, 10, 251, 502, 1255, 2510, 8741, 17482, 43705, 87410, 2193991, 4387982, 10969955, 21939910]

約数ペア:

[(1, 21939910), (2, 10969955), (5, 4387982), (10, 2193991), (251, 87410), (502, 43705), (1255, 17482), (2510, 8741)]