28938819

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1493}}^1$

素因数の和:1587

約数の個数: 32

約数和(自身を含む): 48190464

約数和(自身を除く): 19251645

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1491, 1493, 2769, 4479, 6461, 10451, 19383, 19409, 31353, 58227, 106003, 135863, 318009, 407589, 742021, 1378039, 2226063, 4134117, 9646273, 28938819]

約数ペア:

[(1, 28938819), (3, 9646273), (7, 4134117), (13, 2226063), (21, 1378039), (39, 742021), (71, 407589), (91, 318009), (213, 135863), (273, 106003), (497, 58227), (923, 31353), (1491, 19409), (1493, 19383), (2769, 10451), (4479, 6461)]