21071738

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{1399}}^1$

素因数の和:1861

約数の個数: 16

約数和(自身を含む): 33566400

約数和(自身を除く): 12494662

約数列:

[1, 2, 17, 34, 443, 886, 1399, 2798, 7531, 15062, 23783, 47566, 619757, 1239514, 10535869, 21071738]

約数ペア:

[(1, 21071738), (2, 10535869), (17, 1239514), (34, 619757), (443, 47566), (886, 23783), (1399, 15062), (2798, 7531)]