21258363

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:627

約数の個数: 32

約数和(自身を含む): 34076160

約数和(自身を除く): 12817797

約数列:

[1, 3, 7, 21, 29, 67, 87, 201, 203, 469, 521, 609, 1407, 1563, 1943, 3647, 5829, 10941, 13601, 15109, 34907, 40803, 45327, 104721, 105763, 244349, 317289, 733047, 1012303, 3036909, 7086121, 21258363]

約数ペア:

[(1, 21258363), (3, 7086121), (7, 3036909), (21, 1012303), (29, 733047), (67, 317289), (87, 244349), (201, 105763), (203, 104721), (469, 45327), (521, 40803), (609, 34907), (1407, 15109), (1563, 13601), (1943, 10941), (3647, 5829)]