21167972

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18439}}^1$

素因数の和:18491

約数の個数: 24

約数和(自身を含む): 43370880

約数和(自身を除く): 22202908

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18439, 36878, 73756, 129073, 258146, 516292, 755999, 1511998, 3023996, 5291993, 10583986, 21167972]

約数ペア:

[(1, 21167972), (2, 10583986), (4, 5291993), (7, 3023996), (14, 1511998), (28, 755999), (41, 516292), (82, 258146), (164, 129073), (287, 73756), (574, 36878), (1148, 18439)]