21979947

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{179}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 32685120

約数和(自身を除く): 10705173

約数列:

[1, 3, 11, 33, 61, 179, 183, 537, 671, 1969, 2013, 3721, 5907, 10919, 11163, 32757, 40931, 120109, 122793, 360327, 666059, 1998177, 7326649, 21979947]

約数ペア:

[(1, 21979947), (3, 7326649), (11, 1998177), (33, 666059), (61, 360327), (179, 122793), (183, 120109), (537, 40931), (671, 32757), (1969, 11163), (2013, 10919), (3721, 5907)]