21878980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47563}}^1$

素因数の和:47595

約数の個数: 24

約数和(自身を含む): 47944512

約数和(自身を除く): 26065532

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 47563, 95126, 190252, 237815, 475630, 951260, 1093949, 2187898, 4375796, 5469745, 10939490, 21878980]

約数ペア:

[(1, 21878980), (2, 10939490), (4, 5469745), (5, 4375796), (10, 2187898), (20, 1093949), (23, 951260), (46, 475630), (92, 237815), (115, 190252), (230, 95126), (460, 47563)]