21363687

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 31824000

約数和(自身を除く): 10460313

約数列:

[1, 3, 9, 67, 71, 201, 213, 499, 603, 639, 1497, 4491, 4757, 14271, 33433, 35429, 42813, 100299, 106287, 300897, 318861, 2373743, 7121229, 21363687]

約数ペア:

[(1, 21363687), (3, 7121229), (9, 2373743), (67, 318861), (71, 300897), (201, 106287), (213, 100299), (499, 42813), (603, 35429), (639, 33433), (1497, 14271), (4491, 4757)]