21723878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{51971}}^1$

素因数の和:52003

約数の個数: 16

約数和(自身を含む): 37419840

約数和(自身を除く): 15695962

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 51971, 103942, 571681, 987449, 1143362, 1974898, 10861939, 21723878]

約数ペア:

[(1, 21723878), (2, 10861939), (11, 1974898), (19, 1143362), (22, 987449), (38, 571681), (209, 103942), (418, 51971)]