21379365

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1013}}^1$

素因数の和:1098

約数の個数: 48

約数和(自身を含む): 43026048

約数和(自身を除く): 21646683

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 67, 105, 201, 315, 335, 469, 603, 1005, 1013, 1407, 2345, 3015, 3039, 4221, 5065, 7035, 7091, 9117, 15195, 21105, 21273, 35455, 45585, 63819, 67871, 106365, 203613, 319095, 339355, 475097, 610839, 1018065, 1425291, 2375485, 3054195, 4275873, 7126455, 21379365]

約数ペア:

[(1, 21379365), (3, 7126455), (5, 4275873), (7, 3054195), (9, 2375485), (15, 1425291), (21, 1018065), (35, 610839), (45, 475097), (63, 339355), (67, 319095), (105, 203613), (201, 106365), (315, 67871), (335, 63819), (469, 45585), (603, 35455), (1005, 21273), (1013, 21105), (1407, 15195), (2345, 9117), (3015, 7091), (3039, 7035), (4221, 5065)]