21132921

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 31847040

約数和(自身を除く): 10714119

約数列:

[1, 3, 17, 19, 51, 57, 113, 193, 323, 339, 579, 969, 1921, 2147, 3281, 3667, 5763, 6441, 9843, 11001, 21809, 36499, 62339, 65427, 109497, 187017, 370753, 414371, 1112259, 1243113, 7044307, 21132921]

約数ペア:

[(1, 21132921), (3, 7044307), (17, 1243113), (19, 1112259), (51, 414371), (57, 370753), (113, 187017), (193, 109497), (323, 65427), (339, 62339), (579, 36499), (969, 21809), (1921, 11001), (2147, 9843), (3281, 6441), (3667, 5763)]