21356907

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49783}}^1$

素因数の和:49810

約数の個数: 16

約数和(自身を含む): 33454848

約数和(自身を除く): 12097941

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49783, 149349, 547613, 647179, 1642839, 1941537, 7118969, 21356907]

約数ペア:

[(1, 21356907), (3, 7118969), (11, 1941537), (13, 1642839), (33, 647179), (39, 547613), (143, 149349), (429, 49783)]