21346899

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7643}}^1$

素因数の和:7679

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 13509741

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7643, 22929, 53501, 145217, 160503, 374507, 435651, 1016519, 1123521, 3049557, 7115633, 21346899]

約数ペア:

[(1, 21346899), (3, 7115633), (7, 3049557), (19, 1123521), (21, 1016519), (49, 435651), (57, 374507), (133, 160503), (147, 145217), (399, 53501), (931, 22929), (2793, 7643)]