21999118210

素因数分解:

$2^1\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{1948549}}^1$

素因数の和:1949685

約数の個数: 16

約数和(自身を含む): 39633507000

約数和(自身を除く): 17634388790

約数列:

[1, 2, 5, 10, 1129, 2258, 5645, 11290, 1948549, 3897098, 9742745, 19485490, 2199911821, 4399823642, 10999559105, 21999118210]

約数ペア:

[(1, 21999118210), (2, 10999559105), (5, 4399823642), (10, 2199911821), (1129, 19485490), (2258, 9742745), (5645, 3897098), (11290, 1948549)]