21609821

素因数分解:

${\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{1931}}^1$

素因数の和:2000

約数の個数: 12

約数和(自身を含む): 23554944

約数和(自身を除く): 1945123

約数列:

[1, 19, 31, 361, 589, 1931, 11191, 36689, 59861, 697091, 1137359, 21609821]

約数ペア:

[(1, 21609821), (19, 1137359), (31, 697091), (361, 59861), (589, 36689), (1931, 11191)]