21256935

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28921}}^1$

素因数の和:28943

約数の個数: 24

約数和(自身を含む): 39565296

約数和(自身を除く): 18308361

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28921, 86763, 144605, 202447, 433815, 607341, 1012235, 1417129, 3036705, 4251387, 7085645, 21256935]

約数ペア:

[(1, 21256935), (3, 7085645), (5, 4251387), (7, 3036705), (15, 1417129), (21, 1012235), (35, 607341), (49, 433815), (105, 202447), (147, 144605), (245, 86763), (735, 28921)]