21532810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2269}}^1$

素因数の和:2362

約数の個数: 32

約数和(自身を含む): 42330960

約数和(自身を除く): 20798150

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 2269, 4538, 4745, 9490, 11345, 22690, 29497, 58994, 147485, 165637, 294970, 331274, 828185, 1656370, 2153281, 4306562, 10766405, 21532810]

約数ペア:

[(1, 21532810), (2, 10766405), (5, 4306562), (10, 2153281), (13, 1656370), (26, 828185), (65, 331274), (73, 294970), (130, 165637), (146, 147485), (365, 58994), (730, 29497), (949, 22690), (1898, 11345), (2269, 9490), (4538, 4745)]