21329305

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 29237760

約数和(自身を除く): 7908455

約数列:

[1, 5, 17, 19, 47, 85, 95, 235, 281, 323, 799, 893, 1405, 1615, 3995, 4465, 4777, 5339, 13207, 15181, 23885, 26695, 66035, 75905, 90763, 224519, 250933, 453815, 1122595, 1254665, 4265861, 21329305]

約数ペア:

[(1, 21329305), (5, 4265861), (17, 1254665), (19, 1122595), (47, 453815), (85, 250933), (95, 224519), (235, 90763), (281, 75905), (323, 66035), (799, 26695), (893, 23885), (1405, 15181), (1615, 13207), (3995, 5339), (4465, 4777)]