21256763

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 24

約数和(自身を含む): 25182576

約数和(自身を除く): 3925813

約数列:

[1, 11, 19, 53, 101, 209, 361, 583, 1007, 1111, 1919, 3971, 5353, 11077, 19133, 21109, 36461, 58883, 101707, 210463, 401071, 1118777, 1932433, 21256763]

約数ペア:

[(1, 21256763), (11, 1932433), (19, 1118777), (53, 401071), (101, 210463), (209, 101707), (361, 58883), (583, 36461), (1007, 21109), (1111, 19133), (1919, 11077), (3971, 5353)]