28860009

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 41969664

約数和(自身を除く): 13109655

約数列:

[1, 3, 23, 43, 69, 71, 129, 137, 213, 411, 989, 1633, 2967, 3053, 3151, 4899, 5891, 9159, 9453, 9727, 17673, 29181, 70219, 135493, 210657, 223721, 406479, 418261, 671163, 1254783, 9620003, 28860009]

約数ペア:

[(1, 28860009), (3, 9620003), (23, 1254783), (43, 671163), (69, 418261), (71, 406479), (129, 223721), (137, 210657), (213, 135493), (411, 70219), (989, 29181), (1633, 17673), (2967, 9727), (3053, 9453), (3151, 9159), (4899, 5891)]