19729353

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 12204087

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 251, 399, 591, 753, 1379, 1757, 3743, 4137, 4769, 5271, 11229, 14307, 26201, 33383, 49447, 78603, 100149, 148341, 346129, 939493, 1038387, 2818479, 6576451, 19729353]

約数ペア:

[(1, 19729353), (3, 6576451), (7, 2818479), (19, 1038387), (21, 939493), (57, 346129), (133, 148341), (197, 100149), (251, 78603), (399, 49447), (591, 33383), (753, 26201), (1379, 14307), (1757, 11229), (3743, 5271), (4137, 4769)]